Human Growth and Development — Transcript
Full transcript
- 0:01hello psychology
- 0:03in this lecture we will look at
- 0:07the development across the life span
- 0:11so in developmental psychology we are
- 0:13looking at
- 0:15human growth and human development
- 0:18i think of human development as the
- 0:21study of changes in people from
- 0:24conception until death
- 0:27so the adage is that this subfield of
- 0:30psychology looks at
- 0:32growth from the womb to the tomb
- 0:36so if we have k subject
- 0:39of armando garcia we have these four
- 0:43developmental domains
- 0:45cognitive social moral and physical
- 0:47development and we will study
- 0:51his change across different life
- 0:55milestones and points
- 0:58in the process so if we take across
- 1:02sectional design taking different
- 1:06groups of individuals we can have a
- 1:08cross sequential where we're taking
- 1:10different groups and then we're
- 1:13following each of these groups
- 1:15so if we have armando for instance
- 1:18if armando was born in 1990 we're
- 1:20looking at cognitive
- 1:21social moral and physical growth
- 1:25we come back and look at him when he's
- 1:2710 years old we see
- 1:29cognitive social moral physical change
- 1:31that's happened
- 1:32and then again in 2010 when he's 20
- 1:38could even come back in 2020 to look at
- 1:41him when he's 30.
- 1:43and so
- 1:46where a longitudinal design is different
- 1:49from across
- 1:50sectionals that a cross section is three
- 1:54different groups
- 1:55in at one period of time so how are
- 1:59two year olds different than 12 year
- 2:01olds how are they different from 22 year
- 2:03olds
- 2:04along these four developmental domains
- 2:06that still doesn't give us
- 2:08the change in real time that we're
- 2:11looking for
- 2:11so for instance how might a global
- 2:14pandemic
- 2:15impact each of these these different age
- 2:17groups so
- 2:18here a cross sequential design would
- 2:21help
- 2:22where you take these three cross
- 2:23sections and follow them for a period
- 2:26of years such as seven years
- 2:29and longitudinal cross sequential
- 2:31designs are the most expensive
- 2:34but also they are the most
- 2:38robust in giving us the greatest
- 2:41data uh in following three groups for a
- 2:45period of time
- 2:46so in developmental psychology we're
- 2:49interested in studying nature versus
- 2:51nurture
- 2:52we study how is personality physical and
- 2:55social development influenced by
- 2:58genetics
- 2:59yes personalities influenced by genetics
- 3:02but also how is personality physical
- 3:05development and social development
- 3:07impacted by the environment the
- 3:10environment
- 3:10impacts our personality and our physical
- 3:14development and our
- 3:15social development
- 3:19so we have to study genetics we think of
- 3:21genetics 101 the very basic study
- 3:25of inherited traits
- 3:28think of dna deoxyribonucleic acid
- 3:32a molecule containing the organism's
- 3:36genetic material so your dna is
- 3:40a snapshot of your
- 3:43genotype i ask my students
- 3:47to take out their phones and to open up
- 3:50the camera
- 3:53and to flip the screen so you're looking
- 3:56at yourself
- 3:58and i asked them to raise their hands in
- 4:00class
- 4:01if they have ever looked in the mirror
- 4:06and gotten angry at their parents
- 4:11so some of you will realize the joke
- 4:13there but
- 4:15the reason why i'm asking that is
- 4:17because each of us could probably
- 4:19think back to a time when they when we
- 4:23looked at
- 4:24our mirror and maybe we picked out
- 4:26something about our physical appearance
- 4:27and
- 4:28we understand that genetics someone we
- 4:31inherited these traits
- 4:33from the genetic line
- 4:36and then i asked students just to think
- 4:38what was that like you know for me
- 4:40it's the fact that i'm five seven and
- 4:42not six foot seven
- 4:44uh or i have male pattern baldness
- 4:48uh inherited trade or perhaps
- 4:51um although i do have some musical
- 4:53ability
- 4:55i think my older my oldest sister's got
- 4:58the best voice in the family
- 5:00and a family of five singers uh or if i
- 5:03look at
- 5:03you know traits for athletic ability
- 5:06perhaps
- 5:07other friends of mine have greater
- 5:10hand-eye coordination greater
- 5:14motor movement motor intelligence a lot
- 5:17of that's
- 5:18inherited but if we're looking at what a
- 5:21the difference between
- 5:23the conversation of a gene now if we're
- 5:25looking at a gene this is the
- 5:27section of dna
- 5:31that has the same arrangements of
- 5:33chemical
- 5:36elements and
- 5:39essentially when we're talking about
- 5:40genes genes are either dominant or
- 5:42recessive so if you take
- 5:45the most classic illustration is that of
- 5:49john and jane doe
- 5:51let's look at just one gene
- 5:54right the the gene of eye color so
- 5:58if you look at yourself in the mirror
- 6:00and you you know
- 6:01yourself pretty well physically um
- 6:06you know something about your genetic
- 6:07ancestry uh
- 6:09just by knowing something about your
- 6:10parents and their parents and and
- 6:12maybe people that you're related to
- 6:15cousins
- 6:17uh so if you're john and jane doe they
- 6:19meet in college
- 6:21perhaps they don't know their genotype
- 6:23their genotype is
- 6:26the the traits they have passed to their
- 6:29children
- 6:31the phenotype is the displaying
- 6:34the manifestation of that trait so we
- 6:36look at eye color
- 6:38the genotype john and jane doe
- 6:41they both have a dominant brown eye
- 6:42recess a blue eye that they've passed on
- 6:45they have four children john junior's
- 6:47got a dominant
- 6:48brown eye dominant brown eye he
- 6:50inherited his dad his mother's
- 6:52brown eye gene so the chances that he
- 6:54has a
- 6:55biological child with with
- 6:59a blue eye gene is zero he's not even if
- 7:02he married
- 7:03someone with two blue eyed
- 7:06jeans their children are still gonna
- 7:08have only
- 7:09brown eyes so
- 7:12john and jane's first daughter has a
- 7:15brown eye
- 7:18gene okay
- 7:21from uh she inherited
- 7:24her her mom's dominant brown eye and her
- 7:27dad's recessive blue eye gene but she
- 7:30will not have she does not have blue
- 7:32eyes because
- 7:33the dominant brown eye gene trumps the
- 7:36other
- 7:38same thing for the second son and then
- 7:41finally
- 7:42the the baby of the group
- 7:45uh so this would be let's see let's call
- 7:48her jane
- 7:49the third she has two blue eyed jeans
- 7:52that's her genotype her phenotype is
- 7:54she's the only one in the family that's
- 7:55got blue eyes
- 7:58now instead of blue eyes we're talking
- 8:00about a recessive genetic disorder
- 8:02perhaps john is the carrier of a rare
- 8:06genetic disease and so is his wife they
- 8:09don't know this
- 8:10and they pass this on
- 8:19so in terms of fertilization how does it
- 8:22happen that
- 8:23genes are passed on to our kids well it
- 8:26happens through
- 8:28conception and fertilization so
- 8:30conception is the moment
- 8:31which the male sperm cells fertilize
- 8:35females excels or ovum
- 8:39so typically a woman's body produces one
- 8:42egg cell
- 8:43or one of them every month
- 8:47and if this egg cell is not fertilized
- 8:51then then that's how the you know the
- 8:54menstrual cycle happens
- 8:57so fertilization is essentially when
- 9:01the the uh sperm cell
- 9:05so with one sexual union there is
- 9:07typically
- 9:08anywhere from 10 to 40 million different
- 9:12sperm cell so 10
- 9:16would 10 million sperm
- 9:19in in seminal fluid would be a low sperm
- 9:22count
- 9:2340 million would be a high sperm count
- 9:26so if in a healthy sperm count
- 9:3040 million you're looking literally at
- 9:3240 million different potential
- 9:35children and any one of them could be
- 9:38carrying a
- 9:40rare genetic disease or any one of them
- 9:43could be
- 9:44basically the
- 9:47sort of the the strongest or our most
- 9:50artistic
- 9:51you know what have you but one of these
- 9:54egg cells is going to fertilize the oval
- 9:56let's say
- 9:57one of these sperm cells going to
- 9:59fertilize the egg cell
- 10:01and the moment that happens then
- 10:05this is when pregnancy begins this is
- 10:07conception
- 10:09and so the zygote is the cell that
- 10:12results from the egg
- 10:13cell union
- 10:16some unique
- 10:24some unique um happenings all right
- 10:28monozygotic twins or identical twins
- 10:30happen
- 10:31when one ovum is fertilized
- 10:36by the sperm cell and then this cell
- 10:38duplicates
- 10:40scientists still can't really explain
- 10:41how this happens
- 10:44these infants will have identical
- 10:45features and possess
- 10:48the same set of chromosomes
- 10:51so you'll have 46 chromosomes
- 10:57now occasionally a woman's body will
- 11:01ovulate uh two of them
- 11:04so two of them are here and then a
- 11:06dizygotic twins what you probably know
- 11:09as
- 11:09fraternal twins occur when
- 11:13two different sperm cell fertilize one
- 11:17excel
- 11:20now here these children
- 11:24are are basically only sharing their
- 11:26mother's
- 11:27dna they're kind of like just regular
- 11:30siblings who just so happen to be born
- 11:32at the right time born at the same time
- 11:35a woman's body is only supposed to
- 11:37release an egg once a month
- 11:39but sometimes women ovulate more now in
- 11:43cases where women have these
- 11:46these cases of septuplets or
- 11:52you know the famous case of the octo mom
- 11:56who had eight children at one time
- 11:58most of these these cases of just tons
- 12:01of
- 12:02tons of babies seven or eight babies
- 12:03just usually because of fertility
- 12:05medicine
- 12:07um and there have been some famous
- 12:10multiples where the
- 12:13husband and wife have one child and then
- 12:16they start dealing with infertility
- 12:17later so then they take fertility
- 12:19medicine
- 12:20in which this causes the mother to
- 12:22ovulate a whole bunch
- 12:24and and so then that's there's
- 12:27these multiples are happening um
- 12:31now in cases of conjoined twins
- 12:35there are times when
- 12:38you're having a case of what would be
- 12:40identical twins that don't fully
- 12:42separate
- 12:43this is the case of conjoined twins like
- 12:45abby and brittany hensel this is a
- 12:47picture of them growing up
- 12:49so they share everything from the
- 12:51shoulders down
- 12:54you can think of this as identical twins
- 12:55that did not fully separate but
- 12:57can but but are conjoined
- 13:01they are now in their 30s their
- 13:05subjective reality tv show
- 13:08and i'm sure you can find that stream
- 13:11that
- 13:12catch up see what's going on but last i
- 13:14heard they're teachers
- 13:16and yep so their parents were told that
- 13:21they would not survive
- 13:22um beyond a few days weeks months but
- 13:26they are
- 13:27in their 30s now and so their their
- 13:29brains actually have got to
- 13:31operate a little differently and this
- 13:33has just been
- 13:36something that they're so accustomed to
- 13:38they don't see any other way
- 13:42so periods of pregnancy yeah the
- 13:44germinal period this is the first two
- 13:46weeks after fertilization during which
- 13:49zygote moves down the uterus
- 13:55then the embryonic period from
- 13:59week three to week eight and so during
- 14:02this
- 14:03this first eight weeks of pregnancy the
- 14:06central nervous system is formed
- 14:08the brain is fully functional in this in
- 14:11the sense that it is
- 14:14causing the heart to be so what we mean
- 14:17is that the
- 14:18the axons that wire in from the
- 14:22the uh the baby's brain stem which
- 14:25keep the heart alive they begin so they
- 14:28begin in week
- 14:30three for week three through eight the
- 14:32heartbeat is
- 14:33is working and it will continue to work
- 14:36uh until
- 14:36death so then here we have arms
- 14:40which are forming the eyes are forming
- 14:43the legs are forming
- 14:45uh the teeth begin forming week nine
- 14:50so the the fetal period somewhere
- 14:53between
- 14:5412 and 38 weeks here we have uh
- 14:58the fetus
- 15:01and so in terms of trimesters you have
- 15:05the the zygote the embryo the fetus
- 15:08so by the time that
- 15:12the child is 12 weeks from fertilization
- 15:16uh roughly three months at that time
- 15:19the brain is
- 15:22developed and it is developing now your
- 15:25brain's not fully developed until the
- 15:26time you're 25
- 15:28but the time in which the brain's
- 15:31hardwired in to keep the heart alive and
- 15:33the lungs
- 15:36all of that is is that wiring is there
- 15:40the teeth are developing the palate
- 15:43the so the first sonogram can detect a
- 15:46baby's heartbeat
- 15:48between three week three week eight and
- 15:50then the second
- 15:52sonogram is usually taken to see the
- 15:54baby's
- 15:55sex so the external genitalia is formed
- 15:59between 12 and 38 so we can tell
- 16:03the baby will be male or female
- 16:07five reflexes for survival these come
- 16:11with birth so the stepping reflex if you
- 16:15hold a baby up they will begin to move
- 16:16their feet
- 16:18if you put your hand now this is at
- 16:20birth if you put your hand in a baby's
- 16:23your finger in a baby's hand they'll
- 16:24hold on to it it's the grasping reflex
- 16:29stepping reflex the grasping reflex the
- 16:32morrow
- 16:32startle reflex they will stick their
- 16:34hands out and posture
- 16:36sort of like this my 13
- 16:39soon to be 13 year old would put his
- 16:42hands up like this when i held him he
- 16:44would sleep with it
- 16:45with his arm extended if you were to
- 16:48clap
- 16:49they would revert back to this fetal
- 16:52position
- 16:53the sucking reflex just lightly touching
- 16:56the lip of a baby will cause them to
- 16:58suck
- 17:00this is a reflex reaction because they
- 17:03are
- 17:03hardwired to locate a food source
- 17:07and then the rooting reflex if you
- 17:09lightly brush their cheek
- 17:11they will it will turn over to try to
- 17:14locate the food source as well
- 17:17and this shows that their nervous system
- 17:20is healthy that their brain
- 17:22is is hardwired their sensory receptors
- 17:25are working
- 17:29motor milestones will include
- 17:33a baby rolling over and lifting up their
- 17:36head
- 17:36about three months
- 17:40raising their head five months so
- 17:44raising head first three months rolling
- 17:46over
- 17:47five months sitting up seven months
- 17:52crawling nine months standing
- 17:56up like leaning against the wall
- 17:5911 months walking about a year
- 18:02girls typically cycle through this
- 18:05before boys
- 18:09about immunization lots of
- 18:14controversy around immunization
- 18:18uh here's some different reasons number
- 18:20one children these are
- 18:21myths children who are given
- 18:23immunizations can get the disease itself
- 18:27uh actually we're not giving the
- 18:29children
- 18:31uh the disease if we're like the mmr
- 18:33vaccine
- 18:34uh antibodies from this are given to the
- 18:36children to prevent
- 18:38measles mumps and rubella uh we do have
- 18:41like a polio vaccine
- 18:42in america that's also standard some
- 18:45people say
- 18:46hey polio has been eliminated
- 18:49the reason why we don't see polio cases
- 18:51is because of the vaccine you can go to
- 18:53india right now there's an outbreak
- 18:56in villages and in states where there is
- 19:00no vaccine
- 19:03also there has been rumor that the mmr
- 19:06vaccine
- 19:07has caused autism in children research
- 19:11studies have not concluded this in fact
- 19:13there's been no
- 19:15decisive evidence to link
- 19:18autism with the vaccine
- 19:24and so in developmental psychology we
- 19:26see these four developmental domains
- 19:28that we
- 19:30will compare with different
- 19:32developmental periods
- 19:34after birth we will look at
- 19:37the the period in which child is
- 19:40a toddler from birth till
- 19:44so newborn infants newborns moving up to
- 19:4818 months
- 19:49being a toddler and then we will compare
- 19:53kids at different developmental
- 19:56milestones
- 19:58we will look at their cognitive
- 20:00functioning the development of thinking
- 20:02problem solving and memory
- 20:03we will look at social development
- 20:05personality relationships
- 20:08including their gender identity we will
- 20:10look at
- 20:11moral development development of
- 20:15an understanding of rules distinguishing
- 20:18right
- 20:19wrong and the physical development
- 20:22development of motor skills
- 20:23primary secondary sex characteristics
- 20:27and so when we look at these four
- 20:29developmental domains
- 20:31it's important to keep those in mind the
- 20:33first of
- 20:34this that first of which we will look at
- 20:37is uh
- 20:37cognitive development
- 20:40so piaget's stage theory john piaget
- 20:46um you might
- 20:48be familiar with the binet intelligence
- 20:51scales
- 20:52john piaget was also french um
- 20:55like bene and was also interested in
- 20:58cognitive
- 20:59psychology like binet jean piaget
- 21:02however in studying
- 21:04hundreds of school children and
- 21:06measuring iq and developing iq
- 21:09piaget developed
- 21:12a theory a stage theory of cognitive
- 21:15development
- 21:16whereas benay had hundreds not thousands
- 21:20of children in his sample psja basically
- 21:23just had three
- 21:24he had three children in his sample
- 21:28he had his own children so he examined
- 21:30the development of his own three
- 21:32children and he developed
- 21:34a theory now his theory if you were to
- 21:38put him
- 21:38on team nature versus teen
- 21:41nurture right team nature
- 21:45are this the psychologists who
- 21:48believe that genetics is more important
- 21:51cognitive development
- 21:52piaget would be on that team he would
- 21:55say
- 21:55that genetics determine intelligence
- 21:58genetics determine cognitive
- 22:00development so
- 22:03he basically said in his theory that
- 22:06children are not just
- 22:08little adults but instead think quite
- 22:10differently about the world
- 22:13in response to this famous quote albert
- 22:16einstein said it was
- 22:18so genius in its simplicity
- 22:22that because of their cognitive
- 22:23development children think differently
- 22:27he says that in cognitive development
- 22:31children have
- 22:34organization they organize the world
- 22:37differently
- 22:38they develop schemas you can think of a
- 22:41schema like a concept
- 22:44and how they
- 22:47process the world is one
- 22:50of adaptation so they are
- 22:54in a process of adapting
- 22:57and we're genetically pre-programmed
- 23:00according to piaget to adapt
- 23:05in sequential order so
- 23:08these the organizations or the schemas
- 23:11that we have
- 23:12get increasingly more capable of
- 23:16abstract thought okay so you think we we
- 23:18become
- 23:19we're very concrete early on and then we
- 23:22can
- 23:22we can have more abstract thought later
- 23:25on
- 23:26in our development so
- 23:29assimilation occurs when we have a
- 23:32schema
- 23:33we have let's say i think of a schema as
- 23:36like a concept
- 23:37child has a as a concept that is
- 23:42pretty pretty concrete and any new
- 23:45information
- 23:47uh has to be put in the existing
- 23:52schema so for instance he talked about
- 23:55the
- 23:55the schema of a fruit
- 23:59a child sees a fruit and they maybe
- 24:02get apple if they see an orange they may
- 24:04point to an orange and say
- 24:06apple if they could look at a tomato and
- 24:09say
- 24:09apple until they pick up a tomato and
- 24:12they bite into it and they may not like
- 24:14that taste
- 24:16and eventually they get to figure out
- 24:18that that
- 24:19a tomato is not an apple at that point
- 24:22they have
- 24:23accommodated also when children
- 24:27in his some of his early experiments
- 24:29children would pick up a hammer
- 24:31and attempt to use a hammer like
- 24:37just a toy hammer and they get that
- 24:40maybe a kid's three
- 24:42but if they pick up a toy wrench and use
- 24:44it like a hammer
- 24:45then they have assimilated they have
- 24:48taken
- 24:49the category of a tool and they have
- 24:52assumed that all tools are like hammers
- 24:55the point at which a child could take a
- 24:57toy rich
- 24:58and do like this and take his toy hammer
- 25:00and do like this well then he is
- 25:02accommodated
- 25:07so in psja stage theory he had
- 25:10these four stages sensory motor
- 25:12pre-operational
- 25:14concrete operational and formal
- 25:16operational
- 25:21so in the sensory motor stage child is
- 25:24from birth
- 25:24to two years here children
- 25:28explore the world using their senses
- 25:34a child if they're trying to
- 25:38discover their you know their
- 25:41environment they're crawling around
- 25:43they're putting things in their mouths
- 25:46and the primary task according to psja
- 25:49is
- 25:49object permanence so for instance i'm
- 25:53going to give you guys a test of object
- 25:55permanence
- 25:57all right so coming in from your screen
- 26:00you'll see have a cup
- 26:03there you have it now uh this cup's
- 26:06purple
- 26:07according to piaget when i move this
- 26:11off camera here
- 26:15a young child doesn't realize
- 26:19that the cup is still in my hand
- 26:22you can realize just because you have
- 26:25object permanent
- 26:26but if a child doesn't see something
- 26:28they believe it doesn't exist
- 26:30so if i'm bringing it back
- 26:34interview and then out of view
- 26:38and psja would do these experiments with
- 26:41his kids where he would have a screen
- 26:43and he would he would have uh partitions
- 26:47so he might have a teddy bear or in this
- 26:49case you know my cup
- 26:51would be obstructed by a screen and
- 26:53sometimes
- 26:55he would let go of his
- 26:58teddy bear and then he would
- 27:02grab maybe a different teddy bear right
- 27:05and then
- 27:06move it in and out so he's actually
- 27:09having
- 27:10he would sort of trick the kids and the
- 27:12point at which the kids realized that he
- 27:14was playing a trick on them
- 27:16they would usually light up or start
- 27:18laughing and he would figure it out but
- 27:20he would realize that by two kids start
- 27:23to figure out that just because
- 27:25something
- 27:26is outside of their view does not mean
- 27:29it has ceased to exist
- 27:33right this is what i call the peek-a-boo
- 27:35principle
- 27:36right so it's peek-a-boo right
- 27:41peek-a-boo i'm getting really uh
- 27:44entertained by this thank you for your
- 27:46patience but uh just to demonstrate this
- 27:49that
- 27:50when kids realize that something is
- 27:54unseen but still there
- 27:57in the pre-operational stage from two to
- 27:59seven this is
- 28:00what you might call the preschool
- 28:04era in a child's development kids are
- 28:07very egocentric
- 28:08meaning they don't realize
- 28:12that you don't see things the way they
- 28:14see them
- 28:15so they may
- 28:18pretend that
- 28:22an object is
- 28:26is something in their world right but if
- 28:29you were playing and you pick up that
- 28:31object
- 28:31and you're trying to play with them you
- 28:33call it something different they'll get
- 28:35really offended
- 28:36because you in a sense uh
- 28:40you know you're not pretending things
- 28:42the way that they
- 28:43are and then from their point of view
- 28:47their imagination is the right way okay
- 28:50so
- 28:51um also here conservation is a pretty
- 28:55big issue
- 28:56they're not uh their egocentrism is
- 28:58shown in that
- 29:00they can't tell that changing form
- 29:03doesn't change
- 29:04substance so look at piaget's famous
- 29:06experiment here
- 29:08and again he's using his three children
- 29:12who are at different developmental ages
- 29:15different
- 29:16developmental periods
- 29:19but here you have cylinder a and
- 29:21cylinder b both
- 29:22hold eight ounces of water he would take
- 29:27glass b and use it to pour into glass
- 29:31c then he would compare a and c and ask
- 29:34his children
- 29:36which one has more fluid
- 29:40and from his experience and his research
- 29:43children under the age of seven
- 29:45would say that c does because it's
- 29:48taller
- 29:50however you know that a and b are the
- 29:52same amount
- 29:54fluid eight ounces
- 29:58so this is conservation the idea that
- 30:00changing form doesn't change
- 30:02subject also
- 30:06centration you notice kids focus on
- 30:09one specific aspect if you make them a
- 30:11peanut butter and jelly sandwich they
- 30:13may
- 30:14get cintrated on the crust if you're a
- 30:17family that cuts off the crusts then the
- 30:20mom does it right and dad doesn't
- 30:22uh in our case there's no way i can
- 30:26make a peanut butter and jelly sandwich
- 30:28that's just as good as mom's even though
- 30:30everything is the same i just
- 30:33might not use the right plate or the
- 30:36right cup or cut the
- 30:37crusts off the right way the way the kid
- 30:40is used to
- 30:41so that's centration now irreversibility
- 30:44is important because
- 30:45math math uses reversibility of concepts
- 30:50okay common core got a bad rap and
- 30:54understandably so it got a bad rap for
- 30:56me personally because
- 30:58kids don't really get reversibility
- 31:00until they're seven
- 31:02my child that was six who would be seven
- 31:05at the end of the year was given test
- 31:08prep materials at the beginning of the
- 31:10year
- 31:11to prepare for the testing at age seven
- 31:16and when i got the homework out one day
- 31:20uh so obviously this is six six or seven
- 31:22years ago but my son
- 31:24had this math problem he was very
- 31:27frustrated at homework
- 31:28around the dinner table um and
- 31:32the homework assignment read this it
- 31:35said
- 31:38eleven is nine
- 31:41and two eleven
- 31:44is nine and 2. and that really confused
- 31:47my son
- 31:48it took me a minute until i figured out
- 31:50what they were doing they're simply
- 31:51reversing
- 31:522 plus 9 equals 11. and that
- 31:55if you in fact i did i wrote it down in
- 31:58that way
- 31:59right 2 plus 9 equals my son says 11.
- 32:03so then why is it so complicated to say
- 32:0511 is
- 32:079 and 2 or 11 is 2 and 9 because that
- 32:10concept is reversed
- 32:12and according to piaget a six-year-old
- 32:14is going to have
- 32:15maybe some trouble with this maybe some
- 32:18advanced five-year-olds could pick it up
- 32:20but um because the test was really
- 32:24geared towards the end of the year
- 32:26we were doing test prep materials at the
- 32:28beginning of the year when kids may or
- 32:29may not be
- 32:30cognitively ready for the concept
- 32:35according to piaget by the age of seven
- 32:39between seven and twelve years a child
- 32:43should be able to get reversibility
- 32:47issues and decentration issues so in
- 32:50science
- 32:51we could do some classification
- 32:55logic is doable but it's concrete logic
- 32:59so if you watch pbs in your house with
- 33:03kids if you have younger brothers or sis
- 33:05sisters or if you have nieces and
- 33:07nephews if they're watching pbs all the
- 33:10pbs shows will really be grounded in a
- 33:14lot of this theory
- 33:15so if you know the theory if the show is
- 33:17marketed to seven to 12 years
- 33:20of age you will see this kind of
- 33:23classification
- 33:25um you will see sort of concrete logic
- 33:29it's really built on that
- 33:37so with formal operations
- 33:41what we're looking at is uh from 12 year
- 33:43old
- 33:4412 years of age to adulthood here kids
- 33:48can do abstractions and analogies so
- 33:50they should be able to get humor
- 33:53they also should be able to understand
- 33:55hypothesis testing
- 33:57you know hypothesis testing is by
- 33:58definition abstract thought
- 34:01if we arrange control group and an
- 34:05experimental group
- 34:06and if we manipulate the experimental
- 34:08variable we should expect
- 34:10to see blank that's all hypothetical
- 34:15right hypothetical is hypotheses
- 34:18it's it's the same root word what if
- 34:21what if we
- 34:24if we manipulate one variable
- 34:29now lev vygotsky was a russian
- 34:32psychologist who
- 34:35theorized that
- 34:40the psja sort of underscored the role of
- 34:44the environment or or i should say
- 34:47because
- 34:47because truthfully vygotsky had been
- 34:50around
- 34:51for a long long long time psychology
- 34:54however
- 34:56was more aligned with team nature
- 34:59vygotsky was aligned with team nurture
- 35:01he believed
- 35:02that our cognitive development was
- 35:03really more influenced by the
- 35:05environment than what psychology had
- 35:06really
- 35:08uh held on to so in in many ways
- 35:11he is the sociologist cognitive
- 35:14psychologist
- 35:14he he says that
- 35:19a novice needs
- 35:22skilled tutors to improve cognitive
- 35:25skills
- 35:26so vygotsky said that the innermost
- 35:30circle represents those tasks
- 35:34those cognitive abilities that a learner
- 35:37has gotten
- 35:38but just outside is the realm
- 35:41of more abstract thought the zone of
- 35:44proximal development
- 35:46if the learner comes across a skilled
- 35:51tutor through scaffolding this is social
- 35:54interaction between the novice and
- 35:57the expert their tasks beyond the
- 35:59novice's current
- 36:00abilities
- 36:10so if you remember from our discussion
- 36:12we have
- 36:13memory it is a process of encoding
- 36:17storage and retrieval
- 36:21and we can see that the memory process
- 36:24begins early on kids are learning and
- 36:26processing
- 36:27information differently
- 36:32a bit on language development here the
- 36:35first stage in language development is
- 36:36cooing
- 36:38this is a repetition of vowel sounds
- 36:44followed by babbling this is a
- 36:46repetition of consonants
- 36:48usually
- 36:53which i definitely took as dada
- 36:56which i definitely took credit for being
- 37:00the first word
- 37:01my wife will argue for our first child
- 37:03that it was dog
- 37:05right i thought it was dad
- 37:08uh so this will never be a fully
- 37:11resolved
- 37:11debate in my house um but then one word
- 37:16hollow phrases
- 37:17ma da milk
- 37:20ball uh these are common
- 37:24and uh then we move to telegraphic
- 37:27speech
- 37:28right um for my son we
- 37:31when i tucked him in every night uh i
- 37:34have two sons but for my 13 year old
- 37:36when he was
- 37:37uh getting tucked in uh it was milk
- 37:42and then obviously we're in the south so
- 37:43please and thank you we say milk please
- 37:45so milk peace that was his
- 37:48his phrase uh and then to that he added
- 37:52uh just a width of it
- 37:57uh and then it was chocolate milk right
- 37:59so it was just a widow bit
- 38:01a chakamil piece and uh i really got to
- 38:04where
- 38:04i would tuck him in and then forget this
- 38:06on purpose so i can hear him say
- 38:09that just a witty bit of chocolate milk
- 38:12peace
- 38:13um almost as one word these are
- 38:16highlights
- 38:16in the development of your children
- 38:20and if you're not careful you will
- 38:22forget them whole sentences come about
- 38:25by the age of four
- 38:27so i have a three-year-old turns four in
- 38:29november
- 38:31and uh obviously these whole sentences
- 38:34are
- 38:35adorable kids don't get the
- 38:37transformation
- 38:39rules so i used to use this illustration
- 38:42of young
- 38:43six-year-old girls who would come to my
- 38:44house knock on the door
- 38:46just to ask for a popsicle which because
- 38:49we gave them popsicles when they play
- 38:50with my kids
- 38:52and the older sister would point to her
- 38:54sister and say her wants popsicle please
- 38:57right get it her her not she would like
- 38:59a popsicle
- 39:00or she and i would like a popsicle but
- 39:04um
- 39:08my son oftentimes my youngest will
- 39:10oftentimes
- 39:11say things like she does it right she
- 39:15she she does it and talking about his
- 39:17older sister
- 39:18um somebody spills over a drink uh you
- 39:21spilled the drink
- 39:22she does it right so it's funny to see
- 39:25kids stumbling across language they're
- 39:28trying to communicate
- 39:29and they're communicating but they don't
- 39:31quite get
- 39:32all the complexities and nuances of the
- 39:35transformation rules
- 39:40so in social development let's say that
- 39:43the psychological
- 39:44and social development of infants and
- 39:46children involves
- 39:48development of personality relationships
- 39:51and gender identity so this process is
- 39:55beginning in infancy but it continues to
- 39:57develop through
- 40:00adulthood so
- 40:03temperament these are behavioral
- 40:06characteristics
- 40:06established at birth
- 40:10there's the easy baby there is a
- 40:13difficult baby
- 40:15and a slow to warm up baby now you might
- 40:17remember me talking about these
- 40:19and saying that temperament is not
- 40:21personality just because your baby's a
- 40:23little colicky or a little difficult and
- 40:25maybe they they really don't like to be
- 40:27held
- 40:28they may wake you up and cry and then
- 40:30when you get them the milk warm just the
- 40:32right temperature and you give it to
- 40:34them then they
- 40:34want it i need this can be very
- 40:36challenging
- 40:39uh mary ainsworth was a famous
- 40:41attachment theorist
- 40:44uh here you have a man right uh
- 40:47businessman and the joke here is that he
- 40:50is teaching these these baby geese
- 40:53these baby uh baby chicks to imprint
- 40:56upon him
- 40:56and this has been a research study where
- 40:59famous psychologists
- 41:01have just been around
- 41:05baby geese feeding baby geese and they
- 41:07imprint meaning they connect and latch
- 41:09onto him and realize that he's mama
- 41:11geese
- 41:11the mama goose and if you're feeding
- 41:14animals
- 41:15animal animals can imprint on adult male
- 41:18or adult human caregivers
- 41:22and these studies are really done to
- 41:24discuss attachment
- 41:26right attachment is the bond between the
- 41:27infant caregiver
- 41:30mary ainsworth's strange situation
- 41:33is a famous study in psychology by which
- 41:37ainsworth and her team simply
- 41:40investigated the
- 41:44the connection between the mother
- 41:47and uh the the toddler
- 41:51moms would come in and they would sit
- 41:53down and the researchers would examine
- 41:56how the babies crawl away from mom and
- 41:59they found that babies will typically
- 42:01crawl away from mom even
- 42:03around a corner when mom's out of sight
- 42:06and there will be a point in time where
- 42:08they wake up
- 42:09they kind of look up they realize mom's
- 42:11not here
- 42:13they get anxious they crawl back they
- 42:15crawl in mom's lap and after they are
- 42:18soothed well then they will move around
- 42:20the corner again
- 42:23so this was seen as a secure attachment
- 42:26where a child
- 42:28will explore their boundaries explore
- 42:32limits explore their environment and
- 42:34then come back every once in a while
- 42:35and as a child gets older
- 42:38eventually um they are given more
- 42:41freedom eventually they get a car
- 42:43and they drive and they explore their
- 42:45town but they come home and they visit
- 42:47mom and eventually they go to college
- 42:49they develop relationships and every
- 42:50once in a while they want to come back
- 42:52and wash clothes and
- 42:53hang out with parents and then go back
- 42:56but ainsworth also discovered avoidant
- 43:00uh attachment style an ambivalent
- 43:03attachment style
- 43:05and a disorganized attachment style so
- 43:07the disorganized attachment style is
- 43:10oftentimes babies who are abused or
- 43:12neglected
- 43:14um these are kids who sort of dazed and
- 43:16they they look sad
- 43:18um avoidant children are those
- 43:21that if mom mom leaves
- 43:25they actually do not they do not
- 43:27necessarily cry when mom leaves but they
- 43:29get mad when mom comes back
- 43:32uh and then the ambivalent these are
- 43:33children that don't
- 43:35seem to get upset when mom leaves
- 43:38and may even get a mad when they return
- 43:41so
- 43:42um 90 of children 95
- 43:45of children have a secure attachment
- 43:49this was also evidenced in a study by
- 43:52the harlows harry margaret harlow
- 43:56in this classic research study uh
- 43:59baby rhesus monkeys were deprived of
- 44:02their mother they were neglected
- 44:04and they had the choice between this
- 44:06nice
- 44:07soft cuddly
- 44:10warm monkey or this cold
- 44:13hard mesh monkey that had a bottle so
- 44:16the question then
- 44:17seems to be that seemed to seemed to be
- 44:20asked by researchers if human babies
- 44:23were in this study would a human baby
- 44:25choose to be held or choose to be
- 44:28to be held and starved to death or to
- 44:31have no comfort
- 44:32but to have food and overwhelming
- 44:36overwhelmingly right we can never study
- 44:38that ethically but
- 44:40we could think that for instance
- 44:43breastfeeding over
- 44:44bottle feeding provides both right
- 44:47breastfeeding provides a lot of
- 44:49socialization and now we we we now know
- 44:52that there's
- 44:53a lot of hormones that are released um
- 44:57oxytocins or hormones a happy chemical
- 45:00it's released
- 45:03in the baby's body so this is
- 45:05transferred
- 45:07through the mother's milk but also just
- 45:09through the warmth and the attachment
- 45:11that takes place during this
- 45:14breastfeeding
- 45:15so we talked about piaget who is a
- 45:18colossal giant
- 45:19in the theory of cognitive development
- 45:22but the colossal giant in psychology of
- 45:26social development would probably go to
- 45:28eric erickson
- 45:29you know eric erickson was identified as
- 45:32a neo-freudian
- 45:33coming after freud being influenced by
- 45:36freud but it was really different
- 45:38because freud
- 45:39uh developed a psychosexual theory
- 45:42whereas
- 45:43erickson's psychosocial all right so
- 45:45erickson is saying
- 45:47that early development is influenced
- 45:50by our social interactions he
- 45:54said that this happens in a lifetime
- 45:56it's not just limited to the first
- 45:5912 years of life as freud said
- 46:02and in contrasting to piaget this is not
- 46:07limited to the first six years of life
- 46:11or at first 12 years of life excuse me
- 46:14but he says there's an emotional crisis
- 46:17that is resolved with either positive or
- 46:20negative resolutions
- 46:22so i think you'll see what we mean here
- 46:24so here we have the first four stages
- 46:26trust versus mistrust autonomy versus
- 46:28shame and doubt
- 46:30initiative versus guilt and industry
- 46:32versus inferiority
- 46:34so in the first year of life basic needs
- 46:38is that the child needs predictability
- 46:41feeding
- 46:42and being held and being changed and
- 46:44being comforted
- 46:46needs to be predictable and this sets
- 46:48the basis for all social interaction
- 46:52kids who are neglected eventually
- 46:54develop a sense of mistrust
- 46:57if you have parents dealing with alcohol
- 46:58or drugs and they don't feed their kids
- 47:00regularly
- 47:01they don't hold their kids because they
- 47:03are
- 47:05busy pursuing their own high this could
- 47:08lead to
- 47:09trust issues autonomy versus shame and
- 47:13doubt
- 47:15toddlers realize that they can trust
- 47:16their own
- 47:18they can direct their own behavior so
- 47:21what many call that terrible twos
- 47:24erickson says is really just a kid
- 47:26trying to find out
- 47:28how to direct their own behavior
- 47:31he says parents here should give their
- 47:33kids choices
- 47:34so they can develop a sense of autonomy
- 47:39obviously parents cannot give their kid
- 47:41the choice to wear short sleeves in 40
- 47:43degree weather
- 47:45so there has to be limits
- 47:52from three to five initiative versus
- 47:55guilt preschoolers are challenged to
- 47:57control their behavior
- 47:59uh with responsibility and taking
- 48:01initiative for things
- 48:03so here kids should be given tasks that
- 48:05they can
- 48:06handle being able to clean up their room
- 48:10maybe do some basic homework
- 48:13industry versus inferiority i love
- 48:15talking about the stage because to me i
- 48:17think
- 48:18kids need to foster a sense of being
- 48:21industrious
- 48:22kids uh need to foster a sense of being
- 48:26um industrious is essentially
- 48:29having industry or being able to do
- 48:32stuff right to become a mini expert in
- 48:34an area
- 48:35i ask my kids oftentimes
- 48:38how did they develop their sense of
- 48:42industry what was one thing that you
- 48:44were seeking to be an expert at
- 48:46from the ages of five to twelve whether
- 48:49it's playing piano or singing
- 48:51or rollerblading or some sport
- 48:57and it is in this arena that we start to
- 49:00develop a sense
- 49:02of gender roles so the gender role
- 49:05male and female behavior you could say
- 49:07that gender identity is the perception
- 49:09of one's gender and the behavior
- 49:11associated with that gender
- 49:13so here you have a boy with a sword and
- 49:14he's playing rough and
- 49:16um and then you would have
- 49:20uh perhaps you know these girls
- 49:23dressing in feminine clothes
- 49:28so in adolescence we could say
- 49:31adolescence is from 13 to 20.
- 49:36uh this would involve puberty there's
- 49:38been a lot of debate as to what
- 49:40at what age period do we start
- 49:43adolescence
- 49:45but most experts agree that when puberty
- 49:48happens
- 49:49even if this is precocious puberty uh
- 49:52that can happen as early as 9 10 or 11
- 49:56this may be connected with many
- 49:59different factors that we get into
- 50:02but the presence of primary sex
- 50:06characteristics
- 50:06are available are present at birth the
- 50:09secondary sex characteristics
- 50:11come prominent at puberty so moving
- 50:14forward erickson
- 50:15said that in adolescence
- 50:19we see identity versus role confusion
- 50:25adolescence we have choices
- 50:28between different values and even
- 50:30choices during self-confidence
- 50:32and choices um about different
- 50:36identities
- 50:37erickson will go on to say in his
- 50:39writing that kids are actually trying on
- 50:42different identities
- 50:44the identity that they would have with
- 50:46their friends at school
- 50:47some other context
- 50:50this is also very formidable during the
- 50:54age of adolescence when their
- 50:57their moral identity is developing so
- 50:59lawrence kohlberg was famous
- 51:00psychologist
- 51:03he was influenced by piaget and
- 51:05specifically specifically he looked at
- 51:07how kids
- 51:08used moral reasoning in their
- 51:10development and he came up with
- 51:13different levels of morality
- 51:15pre-conventional
- 51:17conventional
- 51:20and post-conventional
- 51:25and and then that was used in research
- 51:29i don't talk about that as much but
- 51:32essentially we could say
- 51:34adulthood begins in the early 20s it's
- 51:37divided into young
- 51:39middle and late i'm kind of skipping
- 51:42ahead here
- 51:43i want to get back to erickson's
- 51:46theory but some important middle
- 51:48adulthood issues
- 51:50um menopause declining in reproductive
- 51:53systems
- 51:54usually happens late 40s to 50s
- 51:58to andropause men actually go through
- 52:01changes in sexual hormones and
- 52:03reproductive systems
- 52:08and may see an increase in in prostate
- 52:11trouble
- 52:12so moving back to ericsson here
- 52:17erickson said that if a key if a child
- 52:21an adolescent doesn't develop a sense of
- 52:24identity then they will come up
- 52:26will experience real confusion i have to
- 52:29oftentimes
- 52:30ask my students who has experienced
- 52:34some type of identity crisis and i don't
- 52:37really ask this
- 52:38it's all rhetorical um
- 52:41but having difficulty finding a major
- 52:44figuring out what kind of career you
- 52:45want to do
- 52:48uh this may be difficult if
- 52:51if you if you didn't have a sense of
- 52:53being industrious as a kid you didn't
- 52:55learn your thing
- 52:56by the time you went to high school you
- 52:59didn't really
- 53:00have a sport you didn't really have an
- 53:02instrument you didn't have a thing
- 53:04and then you maybe had difficulty
- 53:06figuring out who you are because
- 53:08maybe you didn't find or fit into a
- 53:10group at your school
- 53:12and if you get into college perhaps you
- 53:15have difficulty finding a partner
- 53:17finding significant others if you don't
- 53:20have a grounded sense of identity
- 53:25and i ask my students sometimes if they
- 53:27ever knew
- 53:28a friend who started dating someone
- 53:32and then they seemed to change
- 53:36why did this happen why did a dating
- 53:40relationship
- 53:41seen to rob a person of their
- 53:43individuality
- 53:45it could be that the person wasn't quite
- 53:46ready to date because they weren't quite
- 53:48grounded in who they are and what
- 53:51erickson says
- 53:52is in early adulthood from 18 to 23
- 53:56or say maybe even into early 30s
- 54:00primary task is finding a mate without
- 54:02losing oneself
- 54:04a committed relationship without losing
- 54:07your own sense of identity it could also
- 54:10add to this
- 54:11career
- 54:14moving forward erickson said that
- 54:16generativity
- 54:18versus stagnation here
- 54:21in middle adulthood years you have
- 54:24children who are growing the idea is to
- 54:26be creative
- 54:27and productive and start thinking about
- 54:29the next generation and not just
- 54:31uh one's self not just
- 54:34focusing inward
- 54:38and then in the eighth and final stage
- 54:41integrity versus
- 54:42despair this is here where wisdom
- 54:45spirituality tranquility when a person
- 54:47can look back on their life without
- 54:49regret
- 54:50regrets and accept one's
- 54:53own life choices
- 54:57as we talk about aging
- 55:01essentially we start talking about
- 55:04deterioration
- 55:06uh wear and tear on the brain
- 55:09and this elite
- 55:13eventually leads us to elizabeth
- 55:15kubler-ross
- 55:16cougar ross was a fanatologist which
- 55:20means she studied death
- 55:23and dying and specifically she was
- 55:25interested in the
- 55:26accounts of people as they were dying
- 55:30so she interviewed people who were given
- 55:32a terminal diagnosis
- 55:34something like cancer and she simply
- 55:38interviewed them and then she developed
- 55:42a framework and called them stages of
- 55:45death and dying now these are not meant
- 55:47to be
- 55:48stages like piaget and freud
- 55:51and erickson which
- 55:55those specifically piaget and freud
- 55:59in that stage theory framework you don't
- 56:02get to stage two if you don't go through
- 56:04stage one but in
- 56:05in kubler-ross um
- 56:09i've often said that had i
- 56:13got to talk to her before she published
- 56:15this i might
- 56:16tell her as a counselor as a therapist
- 56:19many
- 56:20people many therapists used
- 56:22kubler-ross's work with people who
- 56:23weren't
- 56:25their clients weren't dying
- 56:29in fact this is used in nursing school
- 56:32this is taught in nursing school to
- 56:33understand
- 56:35uh what someone might experience if
- 56:37their child dies early
- 56:39prematurely their child dies of cancer
- 56:41or
- 56:42it's used in in marriage counseling if
- 56:46if there's divorce people might go
- 56:49through
- 56:50these five stages so as a therapist i've
- 56:53used this and called this the dynamics
- 56:55of grief and loss
- 56:58but let's take a look perhaps you've you
- 57:00can identify some of these but
- 57:02um specifically in the latter stages of
- 57:05life this one is
- 57:06is dealing with death denial
- 57:10kind of deny the terminal diagnosis
- 57:14uh being angry when anger
- 57:17fails perhaps bargaining and praying uh
- 57:20god if you give me more time to live
- 57:22i'll be a better person and i'll
- 57:24spend more time with my kids go to
- 57:26church
- 57:28and then when bargaining seems to fail
- 57:31and
- 57:32death is approaching a person gets
- 57:34depressed
- 57:36and then finally acceptance acceptance
- 57:38doesn't mean you're you're happy with it
- 57:40but it means that
- 57:41it could mean that you know people say
- 57:44it is what it is i've realized this is a
- 57:46new normal we're going to work with it
- 57:49and so i've asked students over the
- 57:52years
- 57:52to explain their experience with denial
- 57:56anger bargaining and depression and i've
- 57:59had some very very famous
- 58:03i would say memorable experiences i had
- 58:05an older non-traditional student she was
- 58:07actually in her 70s
- 58:09she married her high school sweetheart
- 58:12in her 20s right out of high school
- 58:15he owned a business this would have been
- 58:1740 years from the time that
- 58:19she was in my class and she became
- 58:22teary-eyed as she recounted this
- 58:24experience of him
- 58:26taking the company truck of his own
- 58:28company that he owned
- 58:30going through a intersection someone ran
- 58:33a stop sign
- 58:34hit him and killed him immediately dead
- 58:36on impact
- 58:37she said that her ritual was to make
- 58:40coffee and to go to the porch and wait
- 58:42for him to get off work
- 58:44a year later after his death and she
- 58:47becomes
- 58:48emotional sharing this with the class
- 58:50she found herself
- 58:52still making a pot of coffee going to
- 58:55the front porch and waiting for him
- 58:57every day
- 58:58realizing that he would not come back
- 59:02and i can remember how the class got
- 59:05emotional hearing that
- 59:06it was that it was as if her body and
- 59:08her routine had not caught up with
- 59:10reality that he wasn't coming back
- 59:13i can remember a young student whose dad
- 59:16passed away
- 59:17early heart attack i believe
- 59:20she graduated and found herself being
- 59:22mad and angry at her dad
- 59:25feeling as though he should be there now
- 59:28our our experiences going through these
- 59:30stages
- 59:31are not rational but they can give us
- 59:34some
- 59:35some feedback that we may go through
- 59:37bargaining and we may get depressed
- 59:39we may reach acceptance and then we can
- 59:41cycle back through one
- 59:43or more of these stages so i will be
- 59:46interested to hear if you have been
- 59:49through
- 59:49any of these stages and what you think
- 59:53about them
- 59:55elizabeth kubler-ross
- 1:00:00okay that's all we have uh for this
- 1:00:03i look forward to seeing what you have
- 1:00:06to say in your discussion board
- 1:00:08and um excited to read that work
- 1:00:12all right y'all take care and we'll see
- 1:00:15you online
About this transcript
This page contains the full transcript of Human Growth and Development by Keith Stovall, generated from the public captions YouTube serves with the video. The transcript has 7,510 words across 1,430 segments, with the original timestamps preserved so you can click any line to jump to that moment in the embedded player.
What you can do with it
Use the transcript to take notes, quote the speaker, build a study guide, generate a summary with ChatGPT or Claude via the YouTube Summary tool, or export it as a timed subtitle file with YouTube to SRT. You can also re-open it in the transcriber to choose a caption track available on the video.
Free YouTube transcript tool
YouTube2Text is a free YouTube transcript generator — no signup, no daily limit. Paste any YouTube link and get the full transcript instantly, with timestamps, click-to-jump, caption language selection, AI prompts for ChatGPT, Claude, and Gemini, and exports to TXT, SRT, VTT, or Markdown.