Front Back
alleles
two forms of the same gene -appear at the same place on both chromosome in pair -one inherited from each parent -homozygous -heterozygous
zygote
-2 weeks -fertilization -implantation -start of placenta
embryo
-6 weeks -arms, legs, faces, organs, muscles all develop -heart begins to beat
fetus
-30 weeks -growth and finishing -quickening
quickening
moving of the fetus
Factors affecting harm from teratogens
-dose -heredity -age at the time of exposure -other negative influences
preterm
-born weeks before due date -weight may be appropriate
small for date
-may be born at due date or preterm -<expected weight for the length of pregnancy
new born relexes
-eye blink -rooting -sucking -moro -palmer grasp -tonic neck -stepping -babinski
newborn senses
-touch -taste -smell -hearing -vision (under developed)
baby growth by age 1
-gain 50% in height -triple birth weight
baby growth by age 2
-gain 75% in height -quadruple birth rate
influences on early growth
-heredity -emotional well being -nutrition (breast vs bottle feeding)
benefits of breast milk
-correct fat-protein balance -nutritionally complete -more digestible -better growth -disease protection -better jaw and tooth development -easier transition to solid food
malnutrition
-1/3 of children worldwide -detrimental effects -size, other organs, infections/disease, brain development
Plasticity
-The brain's ability to acquire new functions that replace the functions of a damaged part -plasticity is greatest when areas of the brain are not specialized
experience-expectant growth
ordinary experiences "expected" by brain to grow normally
experience-dependent growth
additional growth from specific learning experiences
motor development
-gross motor development -fine motor development -sequence is fairly uniform -cephalocaudal and proximodistal trends
gross motor skills
-holds head up -chest up -rolls from side to back -rolls from back to side -sits -crawls -stands assisted -stands alone -walks
fine motor skills
-prereaching -reaching (with two hands, then one) -ulnar grasp (adjusts grip to objects) -pincher grasp
cultural variations
development affected by: -early movement opportunities -environmental stimulation -child-rearing practices
history-graded influence
explain why people born around the same time- called a cohort- tend to be alike in ways that set them apart from people born at other times
nonnormative influences
are events that are irregular: they happen to just one person or a few people and do not follow a predictable timetable (unlike normative events which are typical or average)
Normative Approach
Hall and Gesell Measures of behavior are taken on large numbers of individuals and age-related averages are computed to represent typical development.
Psychoanalytic Perspective
Psychoanalysts believe that the unconscious mind controls much of our thoughts and actions Psychoanalysts would look for impulses or memories pushed into the unconscious mind through repression
psychosexual theory
emphasizes that how parents manage their child's sexual and aggressive drives in the first few years is crucial for healthy personality development (Freud)
psychosocial theory
in addition to mediating b/w id impulses and superego demands, ego makes a positive contribution to development ,acquiring attitudes and skills at each stage that make the individual an active, contributing member of society (Erikson)
Behaviorism
An approach to psychology that emphasizes the study of observable behavior and the role of the environment as a determinant of behavior and can be treated by altering the patterns of the environment. (B.F. Skinner and John B. Watson)
Social Learning Theory
That learning of any new behavior is the result of three main factors: the Person, the Environment, and the Behavior. (learning through observations of others, like violent video games etc.)
behavior modification
consists of procedures that combine conditioning to eliminate undesirable behaviors and increase desirable responses
Jean Piaget's Cognitive Developmental Theory
Describes how children view the world through schemata, cognitive rules we use to interpret the world Normally, we incorporate our experiences into these existing schemata in a process called assimilation Sometimes info does not fit into or violates our schemata, so we must accommodate …
Ethology
is concerned with the adaptive or survival value of behavior and its evolutionary history
Sociocultural Theory
- focuses on how culture- beliefs, values, customs, and skills of a social group- are transmitted to the next generation Vygotsky
Ecological System Theory
- views child as developing within a complex system of relationships affected by multiple levels of the surrounding environment

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