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