Lifespan Flashcards
Early Influences on Development -Nature vs Nurture
Nature vs Nurture
- Nature-
- character & stress the role of heredity
- Nurture
- characteristics & role of experience
Early Influences pair inheritance
Sex link Heredity
Polygenic
Phenotype
Genotype
- single pair inheritance
- 2 recessive genes or 1Recessive& 1 Dominant
- sex link inheritance influence by the gene of one sex (often X chromosomes)
- Polygenic inheritance-influenced by multiple genes (height, weight, hair color, intelligence, susceptibility to cancer
- Phenotype-observed (hair color, eye color) due to genetic & environment
- Genotype-genetic inheritance (height)
Prevalence of Heredity
IQ children, adults & SES
- .50 for children
- .80 for adults
- .10 for young children ↓SES
- .70 young children ↑SES
Role of Environment
Critical Period vs Sensitive Period
- critical-limited time when exposure must happen in order to develop
- first 8 weeks gestation–vital organs..if they do not develop then they will not develop
- ducks imprinting first 15 hours critical
- sensitive period-longer than critical-time is optimal not necessary
Bronfenbrenner’s Ecological theory
- Microsystem -child’s immediate environment (parent, siblings, friends)
- mesosystem-interactions w/childs microsystem (school, neighborhood watch, parent-teacher
- Exosystem-affect child immediate environment (extended family, stressed parent from work takes out on kid)
- Macrosystem-social&cultural environments-cultural practices, political ideologies, religion, values
- chronosystem-persons lifespan, impacts development and character (chronological-passsage of time)
Heredity and Environmental Influences on Intelligence
- identical twins reared together .85
- identical twins reared apart .67
- fraternal twins reared together .58
- Biological siblings reared together .45
- Biological siblings apart .24
- Half siblings together .35
- Adopted siblings reared together .31
- Biological parent and child together .39
- Biological parent and child apart .22
- Adoptive parent and adopted child .18
Genotype
Passive genotype environment correlation
- PASSive-genes PASSed down
- inherent gene from parent that predisposed you to certain things and support that
Genotype
- Genetic make up inheritance
- contains express and unexpressed characteristics
- heritability estimate 60% of genetics 40% environment
Genotype
Evocative genotype
- EVOcative-EVOke emotion
- environement
- genetics bring up a certain type of response from parents and others reinforcing this response
Genotype
Active genotype
- ACTIVEly pick a hobby
- environment AKA niche-picking
- will only seek experience that fits their genetic disposition
3 genotype changes over time
- 3 environments
- Passive & Evocative most important
- ↓
- Infancy & Adolescence
- Active type
- ↓
- More important & children ↑independence over time as they find their niche
- Passive & Evocative most important
Reaction Range
- how people respond to certain influences
- is the response broad or narrow
Reaction Range
Canalization
- genetic makeup can restrict development regardless of the environment (ID mild, mod, severe)
Dynamic Systems Theory
- needs nature and nurture development
- complex process involves biology, environment, control ourselves & interact with others, how we think or represent the mind
Dynamic Systems
Rhythmic sterotypes
- voluntary complex behaviors
- milestones develop based on the characteristic of the child, and physical environment, goals and desires
Epigenetics
definition
chemical cap
- changes brought on by modifications of gene (phenotype) rather than changes in genetics by DNA (genotype) altering gene expression
- chemical cap-DNA adding methly group to DNA molecule which will KEEP OUT certain genes
Epigenetics
Environmental factors
- include changes in diet, pollutants, and child abuse which can be passed on by one or more generations of the individual
Prader-Willi Syndrome
chromosome abnormality
deletion paternal chromosome 15
Pathological overeating (hyperphagin)
narrow forehead, abnormal eyes, short stature
Angelman Syndrome
- chromosome deletion
- deletion of the maternal chromsome 15
- microcephaly (small head and brain)
- unnaturally happy
- ataxia and hand-flapping
- looks like autism, cerebral palsy and Prader-willi
- appear happy and smile at everything
- UBE3a
Cri-du-chat syndrome
- chromosome deletion on chromosome 5
- high pitched (cat-like cry) ID, DD, Microcephaly
- ↓ birth weight, weak muscle tone, characteristic facial features (wide set eyes, low set ears, round face)
Klienfelter syndrome
- think ken is male only happens in males
- ken has eXtra X- chromosome XXY
- normal development but
- gynecomastia (breast enlargement)
- ↓testosterone
- longer arms and legs, usually taller
Turner syndrome
- all or part of X is missing
- effect females
- don’t develop secondary characteristics
- maybe infertile,short stature, stubby fingers
- LD, VI and/or HI, heart, kidney and urinary problems
Down syndrome
Mosaic Trisomy 21
Translocation
- autosomal-not sex chromosomal
- trisomy 21 (extra 21 chromosomes) cell has 47 instead of usual 46-error in cell division
- hypotonia-short stocky build in addition to other symptoms
- ↑ risk for Alzheimer’s disease.’
- Mosaic trisomy 21-only some of body cells have extra 21–error in cell division
- Translocation trisomy 21-some cells full and some cells partly have trisomy 21 attached to another chromosome usually chromosome 14 error in cell division or inherited
Teratogens
- drugs
- disease
- environmental hazard
- most sensitive time between the 3rd and 8th week of conception
Prenatal exposure to Alcohol
- FASD
- FAS
- pFAS
- ARND
- ARBD
- Fetal Alcohol Spectrum Disorder (FASD)
- Fetal Alcohol syndrome (FAS) most severe-including face & cognitive differences, cns dysfunction and slowed growth
- Partial fetal alcohol syndrome (pFAS) less severe but same symptoms as FAS, slowed physical growth may not be present
- Alcohol-related neurodevelopmental disorder (ARND) involves CNS w/o the other sx
- Alcohol-related births (ARBD) heart, kidney, vision and other physical defects w/o prominent symptoms
*
Prenatal Exposure to Cocaine
- spontaneus abortion during first tri
- shrill piercing cry
- irritability, overly active, shaking baby, difficult2calm
- ↓birth weight (5.5 or ↓)
- children have attention, memory & behavior
- adolescence difficultly w/problem solving & absolute reasoning
- ↑ risk for delinquency
Lowbirth weight, preterm, small for date infants
- lowbirthweight at birth ↓5.5 pounfd
- Preterm-born before 37 weeks
- ↑preterm rate for nonhispanic black mothers
- ↓preterm rate 4 nonhispanic & Asian mothers
- Small for date infants at ↑ risk than preterm
- small gestation age
- >10% percentage
- more likely to do this within 12 months of birth
- ↑likelihood for brain damage & ↑ risk for infections
The Brain
Newborn weight
- 25% adult weight -newborn
- 80% adult weight by 2 years of age
Brain-synaptogenesis
- most neurons are present at birth and ↑ in size
- create new synapses, dendrites & myelination (axon covered in fatty substance)
- act as insulator
- peaks at 2 to 3 years of age
- use or lose (if we use they are strengthened if we do not we lost them)
Brain-synaptic pruning
- loss of unused synapses & continues through teens
Brain cerebral cortex
- cerebral cortex least developed at birth, continues to develop through late teens or early/mid 20’s
Brain weight
- ↓at age 30 w/↓ neurons
- ↑loss of neurons at 60
- ↓frontal lobes (prefontal cortex) & parietal lobes
Brain-neurogenesis
specifically what is it and where is it happening
- production of new neurons in the hippocampus and other areas of brain
Depth Perception-Kinetic-Vision
- least developed sense
- 3 to 4 weeks old 20 ft →to normal at 7 to 8 months 400ft-600 ft
- newborns prefer patterns and faces
- kinetic (motion) cues
Vision-Binocular
- steroscopic
- which derives intergrated information from each eye
- age 3-5 months
Vision- Depth Perception-Pictorial
- Static-monocular
- 5-6 months
- perceived only in one eye
- depth perception size
- shadows & line perception
Vision-Presbyopia
- age 40
- hardening of lens
- difficult to focus on nearby objects
- ↓sensitivity of light
- ↓depth perception
- ↑sensitivity to glare
- ↓ability to discriminate between colors
Audition
- newborns sensitive to sounds specifically ↑fz frequency sounds
- 6 months of age it is close to adult
Auditory Sound localization
- turns head toward sounds
- ↓2 to 4 months then ↑ by 12 months to normal
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Presbycusis
- hearing ↓ at 40 years old
- ↓sensitivity to ↑fz sounds
- gets worse in the presence of background noise
Age related hearing loss
related to risk of Alzheimers
Touch and Pain
- first touch to develop in utero & well developed at birth
Touch and pain newborns
- newborns not given pain med during circumcision respond ↑ at 4 to 6 month vaccinations
Touch and pain-early exposure to pain
- ↑ response full term
- ↓ response pre term
Sudden Infant Death Syndrome (SIDS)
- unexpected death at night under 1
- serotonin abnormalities in medulla (regulates breathing and other functions)
SIDS-risk factors
- increase risk
- decrease risk
- ↑ SIDS- ↓birth weight, males, use of drugs or alcohol, black or indian, 6 months or ↓ (peak 2 to 4 months), bed sharing, stomach sleeper
- ↓SIDS-back sleeper, breastfed, avoid overheat baby, no strap pacifier, bare crib sleeper,
Gross Motor Milestones
- 1-3 chin to chest, roll to side
- 4-6 sits trunk supported, rolls back to front
- 7-9 sits alone, pull to kneel, pull to stand
- 10-12 creeps, cruise, takes steps
- 13-15 stands alone, walks well, walks and carry toy
- 16-18 walks backwards, throws the ball
- 19-30 walks downstairs holding the rail, kicks ball overhead, jumps from the bottom step
- 31-36 walks swinging arms, balance on one foot, pedals tricycle, catches ball
- 4 years hops on one foot to balance on one foot
- 5 walks down stairs alternating feet, hops on one foot several times, balances foot more than 8 seconds
Physical Maturation in Adolescence
- growth spurt
- girls 10 or 11
- boys 12 or 13
- peaks 2 years of start then slows down last total of 3 to 4 years
Puberty- boys
- sexual maturation-usually about same time as a growth spurt
- boys
- early-more +, ↑self-esteem, social maturity, ↑ popularity & better athletic skills, have sex earlier, ↑the likelihood of alcohol use & antisocial behavior
- late- more negative, ↓ self-esteem, ↓ popularity, ↓academics, ↑ anxiety&depression
Puberty Girls
- early onset, negative, ↓self-esteem, ↓popularity, ↓academics, ↑eating disorders,↑depression,↑the risk for promiscuity, ↑ risk substance use
- late onset, + ↑ sociaibility, popularity, & academics.
Infant depth perception
- kinetic
- binocular-stereoscopic
- pictorial
Adolescent Substance Use and Abuse
- subtance use decline ages 12-17 (2018)
- 9% reported drinking alcohol w/n past month
- 8% illicit drugs
- 4% tobacco use
Risk factorsAdolescence substance abuse
- stressful life events
- parental substance abuse
- weak parent-child relationship
- affiliation w/peers using substances or deviant
- mental health ADHD or depression
- favorable attitude toward usage
- ↓social skills
- ↓academics
Protective Factors
- parental disapproval
- good self-control
- supportive parenting
- age-appropriate parental monitoring
- academic success
- involvement in Extracurricular activities
- positive peer influences
- good self-control
- religion
Teen substance use on brain development
- limbic system develops before prefrontal cortex
- limbic is involved in emotions/motavation-nucleus accumbens (part of brain reward system)
- prefrontal cortex-planning, decisions & impulse control
- since these develop at different times teens may do things based on emotion/pleasure vs rationalization/thinking taking more impulsive and risk-taking behaviors
- ↑ likelihood of substance abuse
- effects of alcohol and substance ↑ 4 teens than for those who started later adolescence/early adulthood greater risk substance disorder
Language Development
Theories of Language Development
3
- learning theory
- nativist theory
- social interactionist theory
Language development
Learning theory
- language is the result of
- interactions
- imitation
- reinforcement
Language Development
Nativist Theory
- biologically wired to learn language
- Chomsky LAD language acquisition device
- enables children to understand & speak
- all languages have basic grammar structure and developmentally all kids pass through language stages
Language Development
social interactionist theory
- we learn language by both biological & social factors
- innately children want to understand and be understood
Child-directed speech
- parentese
- speaking slowly
- ↑ pitched voice
- limit vocab
- repetition in sentences
- exaggerated key words and focus on present
Components of language
5 major parts
- phoneme-smallest unit English has 50
-
Morpheme-smallest unit w/meaning (
- prefix & suffix, free or bound
- Semantics-meaning of words
- Syntax-organization of words or phrase
- Pragmatics-language used in social context to communicate effectively w/others
Crying
- first ways babies communicate
- low pitched rhythmic-hunger or pain
- shrill-anger or frustration
- loud high pitched-loud ↑ pitched followed by silence
Responses to cry
- Mother Child
- quick&consistent cried ↓in later months
- ignored during 9 weeks cried ↓ next 9 weeks
- quick 2 severe ↓ 2 minor learned 2 regulate distress on own
Language Milestones
stages of speech (6)
- Cooing-6-8 weeks repeated vowels
- Babbling-3-6 months single consonant-vowel
- baby will say all language sounds until 9 months then narrows down to their language
- Echolalia-9 months repeated w/o meaning
-
First Words- 10 to 15 months express meaning
- 8 to 9 months understand
- Holophrastic-speech 12-15 single word entire thought
- Telegraphic speech 18-24 two word (nouns & verb & adjective)
Language Errors 3 types
- 2 to 3 years old
-
Overextension-too broad word
- doggie (all animals)
- Underextension-too narrow doggie (only for family pet)
- Overregulation-mix apples for plural & past tense (foots or telled)
Language Brokering
- children translating for parents
- (+) strong interpersonal skills, self-confidence, & academic self-efficiency
- (-) effects, ↑ anxiety, frustration, ↑embarrassment & also role reversal as a parent becomes de parent or child
Cognitive Development
Piaget Constructivist Theory
- combines biological motivation & experience
- constructs knowledge from environment
Equilibration
- drive to be balanced between thoughts and environment
Disequilibration-assimilation & accomadation
- drive to restore balance through adaptation
-
assimilation-relates new info w/previous infor
- dog-cow same both have 4 legs
-
accommodation-child modifies previous knowledge to fit
- dog-cow different makes diff sounds
Piaget Sensorimotor
- birth to 2
- Reflexive Circular-1-4 Repeats things he enjoys
- SecondaryCir4-8 Reproduces actions(shake toy)
- Coordinate 20 8-12 combine’s20 to get goals
- Tertiary Circular 12-18 deliberately experiments
-
Intermentization of Schemas 18-24
- develops mental representation
Piaget
Object Permanence
- sensorymotor stage
- recognize people and objects continue to exist