Human Development I. Introduction To Development A. Developmental Psychology the branch of psychology that studies the physical, mental and social changes throughout the human life cycle. B. The major issues in development – 1. Nature Vs Nurture = The question involves which has more impact on our development; the traits we inherit or the environment that we live in – 2. Continuity Vs Stages (discontinuity) = Asks the question is development gradual, or does it proceed through a sequence of separate stages – 3. Stability Vs Change = Do our personality traits persist or doe we become different as we age II. Prenatal Development A. Prenatal Development – 1. The Germinal Stage a. Zygote = the fertilized egg; it enters a 2week period of rapid cell division and develops into an embryo b. At about 7 days the egg becomes implanted on the uterine wall. c. Also during this time period the placenta is formed. The placenta both provides support for the developing human and also helps to process waste material. – 2. embryo = the developing human organism from about 2 weeks after conception through the second month – 3. Fetus = the developing human organism from about 9 weeks through birth 40 Days 45 Days 2 Months 4 Months – 4. Teratogen =Agents such as chemicals and viruses, that can reach the embryo or fetus during prenatal development and cause harm – 5. Fetal Alcohol Syndrome = physical and cognitive abnormalities in children caused by a pregnant woman’s heavy drinking. Symptoms include facial misproportions – 6. Development occurs a. cephalocaudal = head first then the body b. and Proximodistal = meaning form the center outward Development of Newborns Once upon a time, you were like this too… What is an infant? While there is no formal definition of an infant, a child is considered an infant until the age of 1 or until he/she can walk The Competent Newborn – 1. Reflex Abilities a. Rooting reflex = a baby’s tendency, when touched on the cheek, to open the mouth turn the head and search for the nipple b. Sucking reflex – the tendency to suck on an object placed in the mouth c. Grasping reflex – If an object is placed in the palm or in the foot pad, the baby will try to grasp it and hold on. d. Moro reflex – when startled a baby will first lash out with its arms and legs and then try to pull its arms and legs in to make it as small as possible. e. Babinski reflex – When a baby’s foot is stroked he or she will spread the toes. – 2. Research on the capabilities of baby’s a. In regard to hearing – Babies prefer the sound of a human voice, especially their mother – babies will suck more vigorously on a pacifier that triggers a recording of their mother’s voice b. In regards to smell – Babies will turn their heads toward the smell of their own mother c. In regards to vision? – A newborn can only see roughly 18 cm away from them – Babies prefer to look at an object that resembles a human face – They prefer objects that are between 8 - 12 inches away - which happens to be about the distance from the breast to the mother’s face Perceptual Development Babies are always perceiving what is in their world and the world around themselves Gibson and Walk experimented with babies’ perceptual ability They found that children like patterns and faces the most – Younger babies were not afraid. – Older babies realized the drop off and did not attempt to crawl across the checkerboard table Language Development By the time a baby is 2 years old he/she will know up to 1,500 words By the age of five have a rather lengthy vocabulary Between the ages of 2-5 a child learns, on average, 10 words per day Is language learned or innate? – Chomsky vs Skinner Chomsky- Just “happens”- children acquire untaught words and grammar at a fast rate Skinner- association, imitation and reinforcement Physical Development 2 months: Raise head 45 degrees 4 months: Sit with support 7 months: Pull self into standing position 10 months: Creep (slowly crawl) 12 months: Walking c. – 3. Research Strategies a. Habituation = decreasing responsiveness with repeated stimulation b. Used with infants to study vision - As infants gain familiarity with repeated exposure to a visual stimulus, their interest wanes and they look away sooner. III. Infancy and Childhood A. Physical Development – 1. Brain Development At birth 3 months 15 months Neural networks a. Maturation = biological growth processes that enable orderly changes in behavior, relatively uninfluenced by experience b. Maturation and Infant Memory – i. We have few early memories because we lack the neural connections to make memories – ii. What we do have: 3 month olds can remember to use their foot to move a mobile, but forget after 1 month 3 year olds were shown an out-of-focus picture. They can recall the picture better if they were shown a clear version, 3 months earlier even though they have no conscious recollection of ever seeing the picture c. Motor Development i. The sequence of motor development is universal ii. The timing varies from culture to culture iii. There are genetic factors that influence development as well. Twins begin walking on about the same day iv. Motor development is not entirely a process of maturation, the environment does play a role. B. Cognitive Development – 1. In General a. Prior to Jean Piaget most people believed that children knew less as opposed to knowing differently b. Piaget believed cognitive development occurred in a series of stages c. According to Piaget the driving force behind our development is our struggle to make sense of and interpret our ever changing environment d. Schema = a concept or framework that organizes and interprets information Children learn through two complimentary processes of assimilation & accommodation. – e. Assimilation = interpreting one’s new experience in terms of one’s existing schemas – f. Accommodation = adapting one’s current understandings to incorporate new information – 2. Piaget’s Theory and Current thinking a. cognition = all the mental activities associated with thinking, knowing and remembering Piaget’s Stages of Cognitive Development Sensorimotor– Birth – 2 years – Behavior consists of simple motor responses to sensory stimuli. Use of senses to react to body and surroundings. Object Permanence What does an infant do if she loses sight of a toy? Object Permanence Cont… According to Piaget, she forgets that it ever existed! Object Permanence defined- a child’s realization that an object exists when he or she cannot see or touch it. At 7-12 months- child will search for toy. Egocentrism = the fact that infants can not distinguish between itself and its environment/a young child’s inability to understand another person’s perspective. Evidence for this theory includes Piaget’s study on object permanence. Between the ages of 0 to 5 months an object that was visibly hidden will not be searched for Evidence against includes – the study done by Bower and Wishart in which a child between 1 and 4 months was reaching for an object when the room was darkened. Under infra-red light the baby was observed to continue reaching for the object. – Also Bower did a study on 1 month olds where an object was shown then placed behind a screen. The object was then removed and the screen lifted. The babies seemed to show surprise The preoperational stage The stage from about 2 - 6 or 7 years old during which a child learns to use language but does not yet comprehend the mental operations of concrete logic Conservation-the principle that properties such as mass volume and number remain the same despite changes in the forms of the objects Use of mental images or symbols to understand things. Judy DeLoach illustrated the difference between the sensorimotor and preoperational stages in her experiment where a toy dog was hidden in a model room and then in a real room. 2 1/2 year olds couldn’t use model 3 year olds could Theory of Mind = – People’s ideas about their own and others’ mental states- about their feelings, perceptions, and thoughts and the behavior these might predict – Autism impacts the Theory of Mind because children with autism have difficulty removing themselves from their own perspective. – In the study by Peterson & Siegal the child with autism cannot separate their knowledge from that of Sally the doll. Concrete operational stage – From about ages 6 or 7 to 11 during which children gain the mental operations that enable them to think logically about concrete events – Evidence for Children can now perform conservation of liquid experiments because they can compensate for the changes in height and width and they can mentally reverse the procedure – Evidence against = McGarrigle and Donaldson who found that children in the preoperational stage could perform these tasks Formal operational stage – Beginning around age 12 the stage during which people begin to think logically about abstract concepts – Evidence for Child can complete tasks without the use of manipulatives (objects) Children when given a problem will use deductive reasoning and logic to solve a problem rather than trial and error – Evidence against = Gladwin pointed out how Piaget overlooked the impact culture has – Reflecting on Piaget a. Theoretical Criticism – i. Age Much research has seemingly demonstrated that children posses many of the cognitive abilities that Piaget outlined at ages much earlier than he expected Often improving upon the method of assessing the child reveals their cognitive abilities better In addition, Piaget seemed to have over estimated people’s formal operational ability – some research has even suggested that only 1/3 of the population actually reach this stage – ii. Concepts Some of the concepts are vague and the stages often show so much overlap that development is better described as continuous By focusing on the child’s mistakes, Piaget may have over looked important abilities that children do possess Lev Vygotsky – a. Russian researcher who placed more emphasis on social interaction – b. Focuses on the role of social interaction and language on the acquisition of cognitive abilities. Children that talk to themselves, helps them to control behavior and emotions and to master new skills. d. The Zone of Proximal Development – A child maybe capable of higher cognitive functioning with the aid of a more able helper. – For example if you give a young child a puzzle that is above their level they may struggle to complete it. However with the adult’s guidance they might be able to complete the same puzzle b. Sensorimotor stage i. Defined = the stage from birth to about 2 years of age during which infants know the world mostly in terms of the sensory impressions and motor activities vi. Evidence for – In class inclusion test children can not use sets and subsets like in the bead experiment – Piaget and Inhelder used the Three Mountain task to demonstrate egocentrism in children. The participants could not express the scene from another’s perspective Conservation experiments use test like moving water from a fat short beaker to a large beaker to see if a child understands reversibility – vii. Evidence against McGarrigle et al found that when they made the task more understandable and appropriate children in the preoperational stage with a mean age of 6 could accomplish this type of class inclusion test In this case the transformation to the rows was made by a naughty teddy bear Hughes demonstrated that 3.5 year olds could complete the three mountain task if set up differently. In his demonstration a boy doll had to hide from two police dolls Social Development – Attachment a. Attachment = an emotional tie with another person; shown in young children by their seeking closeness to the caregiver and showing distress on separation b. Psychologist are concerned with how attachments form, if there is a critical period in which they must form and what happens if these attachments do not form. – How does attachment form a. Pre-attachment phase = 0-3 months infant shows a preference for humans over objects b. Indiscriminate phase = 3-7 months – infant can distinguish between people and allows strangers to handle it. c. Discriminate phase = 7-9 months – Infant develops specific attachments to certain people and shows distress upon separation from them. May show a fear of strangers d. Multiple Attachment Phase – 9 months and beyond – Increasingly independent and forms other bonds beyond the initial strong attachments. – 3. Forms of Attachment a. Type A – Avoidant or detached – approximately 20% of sample, infant ignores mother, not impacted by her leaving or arriving. b. Type B – Securely Attached – 70% of sample – plays while mother is present, distressed when mother leaves, and relieved when she returns c. Type C – Anxious-resistant– 10% of sample – distressed by mother leaving but not comforted by her return – 4. Stranger Anxiety aka Separation Anxiety a. The fear of strangers that infants commonly display at about 8 months of age; b. Purpose = it is the ability to evaluate people as unfamiliar and possibly threatening and therefore helps protect babies 5. The Harlow Study – In Harlow’s famous study he put a caregiver (wire monkey with food) and a comfort giver (wire monkey covered with fur) in the cage – He found that the monkeys became more attached to the fur monkey rather than the nutrition mother. When in stressful situations the monkeys returned to the fur mother. – The findings illustrated the importance of body contact in attachment and relate to humans in that they too require this attachment to feel safe – 6. Familiarity What would ducklings do if I were the first moving creature they saw? a. Critical Periods = a period shortly after birth when an organism’s exposure to certain stimuli or experiences produces proper development b. Imprinting = the process by which certain animals form attachments during the critical period Konrad Lorenz Everywhere that Konrad went, the ducks were sure to go. The Lorenz Studies – He studied ducks and geese by changing the first object they came into contact with after they were hatched these included himself and even objects like balls – The application of his studies to humans is questioned especially in the area of how important it is to humans and if there is even a critical period in which this contact must be established – Responsive Parenting a. Mary Ainsworth and others believed that responsive parenting would lead to secure attachment. b. One possible explanation of this phenomenon is that it is learned from the mother – Rats pups raised by attentive adoptive mothers are more likely to be attentive to their own pups c. Studies on responsive parenting – Mary Ainsworth’s study = placed young children into “strange situations” and then measured their response Monkeys raised by artificial mothers were terror-stricken when placed in strange situations without their surrogate mothers those children who were more securely attached did not react with the distress that the insecurely attached children did – Deprivation of Attachment= Children raised in institutions such as orphanages often are unable to make connections later in life due to the lack of relationships as a child – Disruption of Attachment = Infants removed from their foster mothers experience difficulties at first - but by age 10 there is no visible effects When raised in isolation Harry Harlow’s monkeys – i. cowered in fear or lashed out aggressively when later placed with other monkeys – ii. many were unable to mate – iii. those artificially impregnated were either neglectful or abusive parents This relates to criminal behavior in that – i. many people who abuse children were also abused themselves – ii. 6/7 death role inmates were horribly abused as children – Does Day Care Affect Attachment? a. In a study by Sandra Scarr, results indicate that in the case of high quality day care programs there appears to be no problems - kids are very “sturdy” b. Ideal day care programs = warm supportive interactions with adults in a safe, healthy, and stimulating environment - an environment in which any child can frequently talk with a familiar adult caregiver c. Studies on infant day care – i. Belsky and Zigler found that children who attended over 20 hrs/week of early day care were less secure as 1 yr olds and more likely to be disobedient – ii. two separate studies showed that children who were in quality programs prior to 6 months of age were more outgoing, popular, and academically successful Self Concept – 1. Self concept = a sense of one’s identity and personal worth – 2. According to Darwin Self-concept emerges when a child recognizes himself in the mirror – 3. This idea was tested by dabbing a dot of rouge on a child’s nose - at around 1518 months the child will touch his own nose thus showing they recognize the face in the mirror is their own Contact comfort = in primates the innate pleasure derived from close physical contact. – ii. The Van den Boom study 100- 6-9 month old temperamentally difficult children randomly assigned to one of two conditions one group’s mothers were given special training on responsive parenting the others received no training The result showed that at age 1, 68% of the babies in the experimental condition had become securely attached. E. Child Rearing Practices – 1. Authoritarian parenting style = imposes rules and expects obedience – 2. Permissive style = makes few demands Parental Authority Questionaire Column 1 = add up 1; 6; 10; 13; 14; 17;19; 21; 24; 28 Column2 = add up 2; 3; 7; 9; 12; 16; 18; 25; 26; 29 Column 3 = add up 4; 5; 8; 11; 15; 20; 22; 23; 27; 30 Results of Authoritative Parenting Style – 3. Authoritative parenting style = parents are both demanding and responsive - they exert control not only by setting rules and enforcing them but also by explaining the reasons and especially with older children, encouraging open discussion and allowing exceptions when making the rules – 4. Baumrind’s studies on parenting style a. Shows that children whose parents use an authoritative style have the highest self esteem, self reliance and social competence b. These findings maybe flawed because – i. Correlation does not = causation – ii. Could the child’s temperament change the way the parent parents – 5. Further studies on parenting style a. One study examined two types of parenting techniques – Power assertion – a method of child rearing in which the parent uses punishment and other aversive techniques to control the child’s behavior – Induction – a method of child rearing in which the parent appeals to the child’s own abilities, sense of responsibility and feeling for others to control the child’s behavior. b. Results showed that the children who were punished were more likely to be aggressive and unruly later on in life. Bellringer You are a student aide for the AP English Literature teacher. Your friend is in danger of failing the class. If they fail they will loose their scholarship to college. They ask you to steal the next test for them. Write down AS MANY reasons (justifications) you can think of as to why you choose to do it or not do it. Adolescence “Storm & Stress” A. Adolescence = the transition period from childhood to adulthood, extending from puberty to independence B. Physical Development – 1. Puberty = the period of sexual maturation, during which a person becomes capable of reproducing During adolescence, unused neural networks are eliminated – What we don’t use, we lose. The growth of myelin continues, which allows better communication with other brain C. Cognitive Development – 1. During adolescence a period of developing reasoning power emerges. – This relates to Piaget’s last stage of cognitive development - the Formal Operational stage where the person is able to reason logically about abstract ideas – 2. During adolescence a period of developing moral growth also emerges a. Piaget believed that moral reasoning grew as cognitive abilities developed b. Building on this idea Lawrence Kohlberg developed a theory of stages of moral reasoning c. He studied this idea by presenting moral dilemmas to his subjects and then asking them to explain why they responded in the way they did. d. Stages of Moral Development – i. Pre-conventional level stage 1. Characterized by the avoidance of punishment stage 2. Characterized by the desire to have the exchange of favors – ii. Conventional level stage 3. Characterized by living up to the expectations of others stage 4. Characterized by doing ones duty – iii. Post-conventional level stage 5. characterized by the understanding that values and rules are relative but generally need to be upheld stage 6. Universal ethical principles – 3. Moral Action a. One of the best predictors of a person’s actions is what his friends do. b. We can teach children moral reasoning through discussion and action. – 4. Critique of moral reasoning a. Kohlberg’s stages has been criticized as being to Euro centric. His system values the individual more whereas certain cultures are more collective. b. Carol Gilligan has argued that Kohlberg’s model was biased towards males – i. In her theory men show a “morality of justice” based on equality whereas women show a “morality of care” based on the idea that none should be hurt – ii. She developed three stages of moral development for women; Care for one’s own survival, Care for others, and Care for integrity of self and others) The Story of Heinz In Europe, a woman was near death from a special kind of cancer. There was one drug that the doctors thought might save her. It was a form of radium that a druggist in the same town had recently discovered. The drug was expensive to make, but the druggist was charging ten times what the drug cost him to make. The sick woman's husband, Heinz, went to everyone he knew to borrow the money, but he could only get together about $ 1,000 which is half of what it cost. He told the druggist that his wife was dying and asked him to sell it cheaper or let him pay later. But the druggist said: "No, I discovered the drug and I'm going to make money from it.“ Later that night, Heinz broke into the drug store and took the drug. What he was looking for Kohlberg did not care about the yes or no answer about stealing the drug, but rather the explanation behind the answer – 2. Primary Sex Characteristics = the body structures (ovaries, testes, and external genitalia) that make sexual reproduction possible – 3. Secondary Sex Characteristics = non reproductive sexual characteristics, such as female breasts and hips, male voice quality, and body hair – 4. Menarche = the first menstrual period D. Social Development – 1. Erik Erikson = a developmental psychologist of the psychodynamic perspective - his theory states that we develop socially in stages – 2. Contends that each stage of life has its own psychosocial task, a crisis that needs resolution – 3. Stages of Psychosocial Development before Puberty a. Infancy = Age 0 through 1 – i. known as the Trust Vs. Mistrust stage. – ii. Task = if needs are met infants develop a sense of basic trust b. Toddlerhood =1 - 2 years – i. Known as = Autonomy Vs. Shame and doubt – ii. Task = learn to exercise will and do things for themselves or they will doubt their own abilities c. Preschooler = 3 -5 years – i. Known as = Initiative Vs. guilt – ii. Task = learn to initiate tasks and carry out plans, or they feel guilty about efforts to be independent d. Elementary School = 6 - Puberty – i. Known as = Competence Vs. Inferiority – ii. Task = children learn the pleasure of applying themselves to tasks, or they feel inferior – 4. Stages After Puberty a. Adolescence = teen years into early 20’s – i. Known as Identity Vs. Role Confusion – ii. Task = Teenagers work at refining a sense of self by testing roles and then integrating them to form a single identity, or they become confused about who they are – iii. Identity = one’s sense of self; according to Erikson, the adolescent’s task is to solidify a sense of self by testing and integrating various roles b. Young Adulthood Age 20’s - Early 40’s – i. Known as = Intimacy Vs. Isolation – ii. Task = Young adults struggle to form close relationships and to gain the capacity for intimate love, or they feel socially isolated – iii. Gender and Social Connectedness According to Carol Gilligan males are more individualist - they use communication to offer solutions to problems whereas females are more relationship oriented Giuliano’s research found that males are more willing to hazard guesses to questions rather than admit they just don’t know. She coined this the male answer syndrome – iv. Intimacy = the ability to form close, loving relationships; a primary development VI. Adulthood A. Physical Changes – 1. Menopause = the time of natural cessation of menstruation – 2. Physical Changes in later life a. Life Expectancy as a whole we now live longer than ever before. Women live longer than males b. Sensory abilities diminish with age. For example visual acuity diminishes, reaction time slows down, muscle strength diminishes, as well as many other areas. c. Dementia and Alzheimer's – i. Alzheimer’s = a progressive and irreversible brain disorder characterized by gradual deterioration of memory, reasoning, language, and finally physical functioning – Research on estrogen therapy and Alzheimer’s shows that women who took estrogen supplements for at least 10 years were 40% less likely to suffer from Alzheimer’s – 3. Cognitive Changes a. Aging and Memory – i. According to researchers Schonfield and Robertson recall memory declines with age, but no measurable decline in recognition tasks has been demonstrated – ii. Information with out a clear meaning or purpose ( nonsense syllables) and timed events (like remembering medication b. Aging and Intelligence – i. Cross-sectional studies are studies in which people of different ages are compared with one another – ii. These type of studies show that intelligence declines with age – iii. a longitudinal study is research in which the same people are restudied and re-tested over long periods of time – iv. These type of studies show that intelligence remains stable until very late in life – A cohort sequential study – combines cross sectional and longitudinal. Corrects for the cohort effect – The cohort effect – occurs because people raised in similar times might exhibit similar qualities. – v. Crystallized intelligence = One’s accumulated knowledge and verbal skills - which tend to increase with age – vi. Fluid intelligence = One’s ability to reason speedily and abstractly - tends to decrease during late adulthood – 4. Social Changes a. Middle Adulthood = 40’s - 60’s – i. Known as = Generativity Vs. Stagnation – ii. Task = the middle-aged discover a sense of contributing to the world, usually through family and work. If they do not develop this sense the will feel a lack of purpose b. Late Adulthood = 60’s and Up – i. Stage = Integrity Vs. Despair – ii. Task = A sense of satisfaction with the life that has been led or a sense of failure and despair at opportunities lost c. Social clock = the culturally preferred timing of social events such as marriage, parenthood and retirement Death & Dying Development is lifelong. Death is the final challenge B. Death and Dying – 1. Kubler-Ross Stages of Death a. Denial = resistance to the initial discovery by seeking other opinions or refusal to accept death will occur b. Anger and resentment = often directed at others out of resentment, frustration and feelings of injustice (Why me?) c. Bargaining for more time = with God, fate or medical professionals to change the situation d. Depression = when the inevitability of death is realized. Grieving or depression may occur for all that will be lost e. Acceptance = giving up to death, becoming more resolved withdrawn and emotionally drained – 2. Ramsay and DeGroot’s stages of grief a. Shock – the initial reaction b. Disorganization = inability to plan c. Denial = behaving as if the deceased is still alive d. Depression = despair e. Guilt = for thoughts or behavior towards the dead. f. Anxiety = about inability to cope with the changes g. Aggression = resulting from anger and frustration h. Resolution = increasing acceptance of death i. Reintegration = reorganization and adjustment – 3. Evaluation a. Much of the evidence comes from observational studies b. Various responses to death based on culture – i. Expression of grief varies – Japanese stoicism to Muslim wailing – ii. Duration varies from Navajo 4 day period to Orthodox Jew period of 1 year Do not go gentle into that good night, Old age should burn and rave at close of day; Rage, rage against the dying of the light. ~ Dylan Thomas Being Old 1. Tape the Popsicle sticks to your fingers so that they DO NOT stick out over the ends. 2. Tape the plastic wrap baggie to your head. 3. The helper’s job is very important. They must maintain the safety of their patient. Once the person has become elderly they must perform the following tasks in no particular order. – – – – – – get a world civ. book and read the quote on page 485 tie a shoe button a jacket or shirt get a drink negotiate the stairwell write your name Once you have completed these tasks switch roles. Clean up your mess! Last, write two paragraphs discussing what it was like to be “old in class” and what it may feel like in reality. Once you have completed these tasks switch roles. After both of you have completed these tasks. You should clean up your mess and start your homework. The assignment is to write two separate journal entries about your experiences today. Each journal entry should be about a page in length. One journal entry will talk about what it was like to be “old in class” and what it may feel like in reality. The second entry should talk about what it was like to have to help someone today and what it may be like in reality. iii. Attitudes vary from fear of the dead by the Hopi to worshiping of the dead by practitioners of Japanese Shinto Prompt 10: What is the most difficult part of being a teenager in society today? Bell-ringer 4: What do you think will be the best part of being an adult out on your own? What will be the worst? Do you think kids your age are in too big of a hurry to “grow-up”? Why or why not? Prompt 12: Write 5 multiple choice test questions on human development. Also create one essay question. Possible Essay Questions One of the great psychological questions is whether development occurs in stages or is continuous. Discuss the moral, social and cognitive development of children in the first 5 years of life. 1. Did you get spanked as a child? 2. Will you use spanking with your child? 3. Is it an appropriate punishment for – – – – A. B. C. D. talking back disobeying a request getting in trouble at school bad grades 4. How old is the oldest a child should be spanked 5. Is slapping in the face okay?