lifespan development Flashcards
(112 cards)
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