4. INFANT DEVELOPMENT Flashcards
DEVELOPMENTAL PSYCHOLOGY
NATURE VS NURTURE
-CHANGES IN BIO, PHYSICAL, BEHAVIOURAL PROCESSES WITH AGE
-CRITICAL/ SENSITIVE PERIODS
CRITICAL PERIOD
AGE WHERE EXPERIENCES MUST OCCUR
-EX) LANGUAGE ACQUISITION
**SENSITIVE PERIOD
OPTIMAL AGE RANGE
RESEARCH DESIGN; CROSS SECTIONAL DESIGN
PEOPLE OF DIFFERENT AGES ARE STUDIED AT A GIVEN TIME
-OBTAIN DATA QUICK
RESEARCH DESIGN; LONGITUDINAL DESIGN
SAME SET OF PEOPLE STUDIED AS THEY AGE
–COHORT
-THIS IS LONG TERM, PEOPLE MAY DROP OUT
-ARE THEY ONLY SPECIFIC TO THIS COHORT
RESEARCH DESIG; SEQUENTIAL DESIGN
COMBO OG CROSS SECTIONAL AND LOGITUDINAL
-TEST SEVERAL COHORTS AS THEY AGE
-THIS DESIGN IS MORE COMPREHENSIVE
STAGES OF PRENATAL DEVELOPMENT
- GERMINAL STAGE; FIRST 2W OF LIFE, FERTALIZATION, ZYGOTE
- EMBRYOTIC STAGE; 2W-8W, EMBRYO, ORGANS START TO DEVELOP
- FETAL STAGE - 9W-BIRTH, FETUS
ZYGOTE
ONE SPERM FERTILISES AN EGG=ZYGOTE
-UNDERGOES CELL DIVISION
EMBRYO
MASS OF CELLS FORMING LIFE SUPPORT STRUCTURES LIKE PLACENTA AND CORD, AND ORGANS
TDF
TESTIS DETERMINING FACTOR; TRIGGERS MALE SEX DEVELOPMENT
-DETERMINES 6-8 WEEKS AFTER CONCEPTION
–CRITICAL PERIOD!
TERATOGENS
EX) MERCURY, LEAD, RADIATION, NICOTINE
-ENVIRONMENTA AGENTS THAT MAY CAUSE ABNORMAL PRENATAL DEVELOPMENT
SEXUALLY TRANSMITTED DISEASES
COULD PASS FROM MOTHER TO BABY AND CAUSE DAMAGE, BLINDESS OR DEAFNESS
ENVIRONMENTAL INFLUENCES, THE MOTHER
MATERNAL STRESS; PREMATURE BIRTHS, INFANT IRRITABILITY,
MATERNAL MALNUTRITION; MISCARRAIGE STILL BIRTH, IMPAIRED BRAIN DEV
ENVIRONMENTAL INFLUENCES; FETAL ALC SPECTRUM DISORDER
-COGNITIVE BEHAVIOURAL AND PHYSICAL DEFICITS CAUSED DUE TO PRENATAL EXPOSURE TO ALC
ENVIRONMENTAL INFLUENCES; FAS- FETAL ALC SYNDROME
-DISORDER WITHIN THE SPECTRUM
-CLUSTER OF DEVELOP ABNORMALITIES
EX) FACIAL ABNORM, MALFORMED BRAINS, PSYCH AND SOCIAL IMPAIRMENTS
INFANCY
-WHEN CONDUCTING A STUDY, THEY MUST CONSIDER THEIR MOTOR AND ATTN SPAN /SENSORY LIMITATIONS
-MEASURE BEHAVIOURAL RESPONSE
WILLIAM JAMES THOUGHT OF BABIES
NEWBORNS WORLD IS A BLOOMING CONFUSION; AN EMPTY AND DISORGANIZATION OF THE BRAIN
VISION IN BABIES
-CAN TRACK OBJECTS, BUT ARE NEAR SIGHTED
-20/800 EYESIGHT, BUT PROGRESSIVELY GETS BETTER IN 6 MONTHS
COLOUR VISION
NEWBORNS CAN SEE FEW COLOURS, BUT BY 3 MONTHS THEY HAVE A FULL RANGE PERCEPTION
PREFERENTIAL LOOKING PROCEDURE
-USED TO DETERMINE PREFERENCE FOR VISUAL STIMULI.
TIME SPENT LOOKING AT STIMULI IS RECORDED, INFANTS PREFER COMPLEX STIMULI
SENSES AT BIRTH
TACTILE, AUDITORY, CHEMICAL PERCEPTUAL SENSES
NEWBORN LEARNING; HABITUATION
RECOGNIZE FAMILIAR OVER UNFAMILIAR FACES REGARDLESS OF EXPRESSION
NEWBORN LEARNING; CLASSICAL AND OPERANT CONDITIONING
ACQUIRE CONDITIONED RESPONSES
-OPERANT- MAKE THINGS HAPPEN
-THEY EXPECT “REWARDS” AFTER
NEWBORN LEARNING; IMITATION
BABIES CAN IMITATE ADULT EXPRESSIONS
new born sensory and perception; sound localisation
-ability to localise sounds exists from birth until 3m of age, disappears then reappeares at 4-5m
newborn sensory and perception; phoneme discrimination
-ability to detect changes in speech sounds, even better than adults.
-disappears at 12m
newborn sensory and perception; musisc perception
can process and remember music
physical development; stages
1st; brainstem; basic survival factores
later; associative cortex ateas, frontal cortex
physical development; growth rate
brains of 5 y/o +90% of adult size
-new synapses formed, brain becomes more specialized
motor development
follows stage-like sequences that age of acquirment does not vary
ex)stand to support->pull self to stand