EXAM 1 Flashcards
(64 cards)
Erikson 8 stages of psychosocial development
- trust vs mistrust (0-1)
- autonomy vs shame & doubt (1-2)
- initiative vs guilt (2-6)
- industry and inferiority (6-12)
- identity vs role confusion (12-20)
- intimacy vs isolation (20-40)
- generativity vs stagnation (40-65)
- ego integrity vs despair (65+)
Piagets 4 stages of cognitive development
SENSORIMOTOR: 0-2, development of object permanence
PREOPERATIONAL: 2-6, egocentrism
CONCRETE OPERATIONS: 6-12, Conservation
FORMAL OPERATIONS: 12+, abstract and hypothetical reasoning
adrenarche
- beginning of adrenal involvement
- age 6-9, adrenal glands mature, produce androgen DHEA
- DHEA sets off pubic hair
menarche
- first period
- comes late in puberty
- leptin increases sharply during weight gain of puberty
peak height velocity
comes about 2 years after start of growth spurt, girls add 8cm a year, boys add 9cm a year
- girls finish and start growth spurt 2 years earlier
pheromones
airborne substance signals emotional states such as fear and sexual arousal
timing of puberty
- girls: breast budding or pubic hair at 10, usually 2 years after first period happens
- boys: go through stages a year or two later
stage termination hypothesis
middle childhood is time for firming up authority of ego and gaining strong sense of reality
adult resemblance hypothesis
those who seem like adults benefit more from status of adults, not very true for girls
distancing hypothesis
children with less parent contact as they become sexually mature are less likely to commit incest
brain size development
- born with 25% of adult brain size
- 1 years old, 73% of size
- 10 years, 95% of size
synaptic pruning
everything is new so high rate of neuron and synapse production. regularly used connections are myelinated. connections not often used are pruned.
myelination
strengthened, white matter increases
pruned
removed, grey matter
macrocephaly
larger head size
autism
- linked to microcephaly
- associated with developmental delays (atypical behaviour spectrum)
- cognitive delay = delay in pruning
importance of balance
too little stimulation: sensory receptors may not have enough information to absorb and send to the brain
too much: sensory receptors may be flooded with too much information, send wrong information to brain
brain changes in adolescence
- cortical volume decline during adolescence, increase through childhood
- neurons and synapses proliferate in cerebral cortex, gradually pruned through adolescence
- waxing and waning of cortical thickness reflects period of synaptic elaboration followed by period of experience-dependent synaptic pruning
hormones
cant function without, help guide and regulate behaviour. Tell organs how and when to work, sleep, find food etc.
sex hormones
- steroid hormone (estrogens + androgens)
- produced by gonads (ovaries + testes) OR adrenal glands
- affect growth or function of reproductive organs or development of secondary sex characteristics
hormones as neurotransmitters
- endocrine release sex hormones into bloodstream, help mediate cell metabolism abdominal homeostasis
- wide distribution of receptors for sex hormones, enables hormones to affect brain circuits influencing neural communication
estrogen
- increases serotonin
- positive on learning and memory, protect nerves from damage, Alzheimer’s + Parkinson’s
- Too low: difficult concentrating, mood swings, irregular periods
- Too high: gain weight, memory problem
testosterone
- promote mental clarity and sharpness
- protects against Parkinsons + Alzheimer’s
- Too high: excess body hair, acne, change in body shape
- Too low: fatigue, weight gain, muscle loss
progesterone
- cognition, mood, inflammation
- calm and protective effect on brain
- Too low: mood swings, weight gain, PMS
- Too high: bloating, dizziness, yeast infections