lifespan development Flashcards
Genotype Vs Phenotype
Genotype- persons genetic inheritance
Phenotype- his or her observed chacteristics, which are due to heredity and environment
Bronfenbrenners Ecological Model
Five environmental systems or levels
Microsystem- childs immediate environment face to fce with school home, and neighborhood ( relationships with parents, siblings, peers and teachers
Mesosystem- interactions between components of the microsystem such as influence of family factors on the childs behavior at school
Exosystem- broader environment that affect the childs immediate environment and include parents workplace, school board,
Macrosystem- environmental influences such as cultural beliefs, economic conditions,
Chronosystem- environmental elements that occur over an individuals lifespan and impact the individual in ways such as SES
Rutter’s Indicators
Six factors accurate predictors of child psychopathology: Severe martial discord, low SES, overcrowding or large family size, parental criminality, maternal psychopathology, placement of the child outside the home
Niche Picking
occurs when child actively seek out experiences that are consistent with their genetic predispotions
Critical vs sensitive periods
Ethology- branch of zoology that is dedicated to study of animal behavior,
Critical periods- specific predetermined periods of time of biological maturation when an organism is senstive to certain stimuli that can have a positive or negative affect
**Lorenz- found that goslings imprint on the firstmoving object they see during the first two to three days ( usually mother) follow and stay near to help survival, ** critical period for imprinting
Sensitive periods- longer in duration, more flexible than critical periods, not tied as closely to chronological age or maturational age
Phenylketonuria
Recessive gene disorder, ( one from each parent) - lack an enzyme needed to metabolize phenylalanine ( amino acid) found in milk, bread, eggs, beginning a diet low in PKU prevents severe intellectual disability than can accompany this disorder
Down Syndrome
autosonomal disorder, extra chromosone 21 - characterized by intellectual disability, retarded physical growth, motor development, increased susceptibilty to alzheimer’s diease, heart defects
Klinefelter Syndrome
occurs in males and due to the presence of two or more X chromosomes with a single Y , have a small penis and testes, develop breasts during puberty, limited interest in sexual activity, learning disabilities
Turner Syndrome
occurs in females and is caused by presence of single X chromosome, short in stature, webbed neck, absent development of secondary sex characteristics, impaired cognitive deficits
Fetal Alcohol Spectrum Disorder
largely irrevesible symptoms, may result when mother drinks heavily during second half of the first trimester,
include facial abnormalities, limited phsyical growth, hearing impairments, cognitive deficits, behavioral problems, hyperactivity,
*most affected regions include corpus collusum, hippocampus, hypothalmus, cerebellum, basal ganglia and frontal lobes
Maternal Malnutrition
associated with miscarriage, stillbirth and low birth weight, may result in intellectual disability ,
*severe malnutrition in the third trimester determintal for the developing brain lead to a reduced number of neurons, lack of folic acid can lead in spina bifida
Cerebral Cortex
underdeveloped at birth, responsible for higher level cognitive functions, language, spatial skills, and complex motor activity,
*first few months primary and motoro areas of the cortex undergo substantial development, prefrontal cortex continues to mature through childhood and adolescence may not be fully developed till early 20s.
Neurogenesis
compesenate for neuronal loss by forming new snaptic connections and neural pathways and new neurons in the hippocampus
Early Reflexes, Babinski, Moro
Babinski- toes fan out and upward when soles of the feet are tickled
Moro- flings arms and legs outward and then toward the body in response to a loud noise or sudden loss of physical support
Vision
- least developed at birth, 6 months infants visual activity is close to that of a normal adult,
- depth perception develops first as kinetic( motion), binocular cues and pictorial cues, newborns prefer to look at high constrat patterns, prefer looking at faces by 2-5 days old, and then 2 months- prefer face of mother
Auditory Localization
ability to orient toward the direction of a sound is evident shortly after birth, seems to dissapear between 2-4 months and reppears and improves during the rest of 1st year.
*3 months, infants distinguish between different voices and prefer mothers voice,
Pain Perception
- newborns who were not given anthesthesia during circumsion had a more adverse reaction than those who received anthesthesia when given a routine vaccination 4-6 months later,
- full term infants who undergo painful medical procedures during infancy later exhibit heightened responsivity to pain , while preterm infants who experience those procedures exhibit reduced reactivity to pain later in infancy
Developmental Milestones 1-3 months
able to raise chin from ground, turn head side to side, by third month can play with hands and fingers and brings object in hand to mouth
4-6 months
rolls from abdomen to back, 5 months sits on lap and reaches and grasps, 6 months sits alone and stands with help,
7-9 months
good coordination, 8-9 months- sits alone without support, begins crawling, 9-10 pulls self to standing by holding furniture
10-12 months
stands alone and walks with help, 12 months takes steps alone
13-15 months
walks alone with a wide based gait, by 15 months creeps up stairs,
16-25 months
18 months runs clusismly, walks up stairs with hand held, 24 months- goes up and down steps alone, kicks a ball, turns pages of book, 50% of children use toliet during the day
25-48 months
30 months jumps with both feet, good hand finger coordination, 36 months rides tricyle, dresses and undresses simple clothing, completely toliet trained, 48 months- preference over right or left hand
Physical Maturation in Adolescence
Boys: early maturation- several benefits including popularity with peers, athletic skills, dissatisfaction with body image, increased risk for alcohol use
Late maturation- more childish, more attention seeking behaviors, less confidence, more susceptible to depression
Girls: Early maturation– negative consequences such as poor self concept,unpopular, dissatisfied with physical development , low academic achievement, more likely to engage in sexual behaviors and drug and alcohol use, increased risk for eating disorder or depression
Late maturation- dissastified with appearance, treated like little girls, outperform peer with academic performance
Visual Changes in Adulthood
most adults notice inability to focus on close objects ( presbyopia) around age 40
65- visual changes interfere with reading, driving, rduced perception of depth, increased light sensivity, and deficits in visual search, speed of visual processing
Sexual Activity in Late Adulthood
sexual activity in mid life and earlier is a good predictor,
adults ages 57 to 85 years of age reported a frequency of sexual activity similar to the freqeuncy reported in earlier study of adults 18-59
survey of adults 60 + found that 43% of all respondents and 61% of respondents with current sex partners with more physically sastifying or unchanged compared to 40s
Adaption( Assimilation and Accommodation)
Assimilation- incorporation of new knowledge into existing schemas
Accommodation- modification of existing schemas to incorporate new knowledge
Sensiromotor Stage
birth-two years- Child learns about objects and other people through the sensory information they provide,
Subtage 1- Relexive Schemas- birth to 1 month- infant exercises his or her reflexes
Substage 2- Primary Circular Reactions- 1-4 months- infant attempts to repeat pleasurable events involving his or her own body
Substage 3- Secondary Circular Reactions ( 4-8 months) infant attempts to reproduce pleasurable events involving other people or objects
Substage 4- Coordinated Secondary Circular Reactions- (8-12 months) infant combines secondary circular reactions ( schemas) into new complex action sequences
Substage 5- tertiary circular reactions ( 12-18 months) - infant deliberately varies an action sequence to discover the consequence of doing so
Subtage 6- Mental Representation- (18-24 months) - infant develops representational symbolic thought which involves forming internal representations that allow him or her to think about absent objects and past events
*object permanence- allows the child to recognize that objects and people continue to exist when they are out of sight
Symbolic play and imitation also occur
Preoperational Stage
2-7 years old- symbolic( semotic( function- child to learn through the use of language, mental images and other symbols,
Precasual transductive reasoning-incomplete understanding of cause and effect
Magical thinking- belief that thinking about something will actually cause it to occur
Animism- tendency to attribute human characteristics to intimate objects
*do not recognize that actions can be reversed and focus on more noticeable details ( centration)
Concrete Operational
7-11 - capable of mental operations, solve class problems, understand part whole relationships in relational terms,
Conversation- operations of reversibility and decentration and develops gradually with conversation numbers occurring first.
Hortizontal declage- gradual acquisition of conversation abilities and other abilities within a specific stage of development
Formal Operational
11 or 12+ years- able to think abstractly and capable of hypothetico- deductive reasoning, identify competing hypotheses about a problem and strategies for systematically testing those hypotheses.
Adolescent egocentrism-
Personal fable- belief that one is unique and not subject to the natural laws that govern others, and imaginary audience- belief that one is always the center of attentin
Information Processing
cognitive development as involving increasing information processing capacity and efficiency. Improvements in memory are due to increased memory capacity, enhanced processing speed, and greater automaticity. focus on development within specific cognitive domains such as attention, memory and reasoning rather than on identifying global principles of development.
Vygotsky’s Sociocultural Theory ( ZPD, Scaffolding)
sociocultural model- all learning as socially mediated and proposes that cognitive development is interpersonal( interactions with others) and then intrapersonal( when the child internalizes what he or she has learned)
Zone of proximal development- refers to the discrepancy between a childs current developmental level and the level of development that is just beyond his or her current level but can be reached when an adult or more experienced peer provides scaffolding
Scaffolding- instructions, assistance, support and most effective when it involves modeling, providing cues, and encouraging the child to think about alternative plans of action.
Symbolic play- provides a child with zone of proximal development that enables the child to practice behaviors in situations that require less precision and accuracy than would be required in reality.
Theory of Mind
the ability to make inferences about another representational states and to predict behavior accordingly
Ages two to three- children become aware of other peoples mental states and begin to understand that people have different perceptions, emotions, and desires that influence their actions
Age four to five- understand that another persons thoughts may be false and that people act on false beliefs
After age 5- children begin to develop a more sophisticated theory of mind by about age 6 and realize that peoples actions are not always consistent with their true thoughts and feelings , people may interpret the same event differently
Memory Strategies in Childhood
preschoolers sometimes use non deliberate memory strategies but do so in an ineffective way, and elementary school children use somewhat more effective strategies but distracted by irrelevant information , when taught rehearsal strategies, young children may apply them to the immediatr situation but not use them in new situations
*by age 9-10- children tend to use memory strategies use regularly, beginning with rehearsal, organization, and elaboration,
Childhood ( Infantile) Amnesia
inability to recall memories experienced prior to age 3 or 4, because the prefrontal lobe are not sufficiently developed prior to age 4.
Effects of Age on memory
negative impact on explicit memory than implicit memory, more trouble recalling what they need to buy at the grocery store then remembering the words to a familar song ,
- older adults exhibit greatest declines in recent long term memory, followed by working memory,
- episodic memory is more adversly affected by age related decline
- working memory deficits due to reduced processing efficiency, deficits in long term due to encoding
Theories of Language Development ( nativist approach/Chomsky)
biological mechanisms and stresses universal patterns of language development, innate language acquistion device makes it possible for a person to acquire language just by being exposed to it.
Behavior approach- language is acquired through imitation and reinforcement
Interactionists- biological and environmental factors, some cultures adults use child directed speech,
Semantic and Syntactic Bootstrapping
Semantic Bootstrapping- child’s use of his or her knowledge of the meaning of words to infer their grammatical catergory, children learn that words refer to objects or persons are nouns, actions are verbs
Syntactic bootstrapping- childs use of syntactical knowledge to learn the meaning of new words
child encountering a new noun in an utterance may begin to infer the nouns meaning by grammatical terms
Phonemes and Morphemes
Phonemes- smallest units of sound that are understood in a language
Morphemes- smallest unit of sound that convey meaning
Bilingualism/Bilingual Education
billingual children do well, or even better than monolingual children on tests measuring language and cognitive skills,
billingual children tend to score higher than monolinguals on measures of cognitive flexibility, cognitive complexity, anayltical reasoning, working memory capacity, attentional control, and awareness
Cooing and Babbling
6-8 weeks begin cooing ,that mainly consist of vowels
Cooing and Babbling
6-8 weeks begin cooing ,that mainly consist of vowels , followed by 4 months, babbling which involves repition of simple constonant and vowel sounds, early babbling is sounds of all languages, between 9-14 months narrow it to that of native language