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Developmental Psychology, Module 3 Exam
Questions With Correct Answers 100%
Verified.
Infancy - Answer✔Birth to about 2 years; refers to period before child can speak
Infant weight - Answer✔By 5 months, birthweight has doubled; by 1 year, it has tripled; by 2
years, it has quadrupled
Infant length - Answer✔On average, by end of year 1, baby is 30 inches tall; by end of year 2,
child is 3 feet tall
Body proportions - Answer✔Not all body parts grow at the same rate (head grows slower)
Cephalocaudal principle - Answer✔States that growth follows a direction and pattern that
begins with the head and upper body parts and then proceeds to the rest of the body (head to
toe)
Proximodistal principle - Answer✔States that development proceeds from the center of the
body outward (from middle to extremities)
Principle of hierarchical integration - Answer✔States that simple skills typically develop
separately and independently, but that these simple skills are integrated into more complex
ones (sweeping motions develop before pinching motions)
Principles of the independence of systems - Answer✔Suggests that different body systems
grow at different rates (digestive and respiratory systems develop before reproductive)
Infants are born with ___________________ neurons - Answer✔100-200 billion
Over the first 2 years of life, networks of neurons become... - Answer✔Increasingly complex
and interconnected
Synaptic pruning - Answer✔Cells that are not needed die off
Nervous system growth - Answer✔Brain triples in weight in first 2 years of life; neurons
increase in size; axons become coated with myelin (to speed transmission of impulses)
1
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 12:43 PM.
Neurons arranged by function - Answer✔Some move to cerebral cortex, the upper layer of
brain; some go to subcortical levels, where they regulate basic function
Shaken baby syndrome - Answer✔Damages brain and spinal cord; typically leads to death; 600-
1400 cases in US per year
Plasticity - Answer✔Degree to which the brain is susceptible to experience; greatest during first
several years of life; brain is more resilient
Sensitive period - Answer✔Time when organism is particularly susceptible to environmental
influences
Brain development in infants is best supported by... - Answer✔Cuddling, talking/singing, and
playing
Rhythms - Answer✔Repetitive, cyclical patterns of behavior
States - Answer✔The degree of awareness an infant displays to both internal and external
stimulation
Infant sleep - Answer✔Sleep 16-17 hours daily; sleep stages (circadian rhythms) are out of
sync/opposite to parents during early infancy; most do not sleep through the night for several
months
Infant REM sleep - Answer✔REM is associated with dreaming; REM takes up half of infant's
sleep; infant brain waves are different than the dreaming sleep of adults
Autostimulation - Answer✔The brain stimulating itself
Sudden infant death syndrome - Answer✔Unexplained death of a seemingly healthy baby; most
susceptible from 1 month to 1 year; affects about 2500 infants in US yearly; no cause has been
found; leading cause of death in first year of life
APA suggestions for infant sleep - Answer✔Before a baby can flip themselves, the APA
recommends that they sleep on their back in a crib with nothing else (no blankets, stuffed
animals, etc.)
Reflexes - Answer✔Unlearned, organized, involuntary responses that occur automatically in the
presence of certain stimuli (some stay throughout life, others disappear)
Infant reflexes - Answer✔Grasping, eye blink (blinking when touched or exposed to bright
light), swimming, startle, moro (feels like they are falling), rooting (turning head when touched
near mouth)
Ethnic and cultural differences may affect the way _____________ are displayed in infants -
Answer✔Reflexes
Gross motor skills in first year - Answer✔(Can vary widely from child to child)
2
Developmental Psychology, Module 3 Exam
Questions With Correct Answers 100%
Verified.
Infancy - Answer✔Birth to about 2 years; refers to period before child can speak
Infant weight - Answer✔By 5 months, birthweight has doubled; by 1 year, it has tripled; by 2
years, it has quadrupled
Infant length - Answer✔On average, by end of year 1, baby is 30 inches tall; by end of year 2,
child is 3 feet tall
Body proportions - Answer✔Not all body parts grow at the same rate (head grows slower)
Cephalocaudal principle - Answer✔States that growth follows a direction and pattern that
begins with the head and upper body parts and then proceeds to the rest of the body (head to
toe)
Proximodistal principle - Answer✔States that development proceeds from the center of the
body outward (from middle to extremities)
Principle of hierarchical integration - Answer✔States that simple skills typically develop
separately and independently, but that these simple skills are integrated into more complex
ones (sweeping motions develop before pinching motions)
Principles of the independence of systems - Answer✔Suggests that different body systems
grow at different rates (digestive and respiratory systems develop before reproductive)
Infants are born with ___________________ neurons - Answer✔100-200 billion
Over the first 2 years of life, networks of neurons become... - Answer✔Increasingly complex
and interconnected
Synaptic pruning - Answer✔Cells that are not needed die off
Nervous system growth - Answer✔Brain triples in weight in first 2 years of life; neurons
increase in size; axons become coated with myelin (to speed transmission of impulses)
1
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 12:43 PM.
Neurons arranged by function - Answer✔Some move to cerebral cortex, the upper layer of
brain; some go to subcortical levels, where they regulate basic function
Shaken baby syndrome - Answer✔Damages brain and spinal cord; typically leads to death; 600-
1400 cases in US per year
Plasticity - Answer✔Degree to which the brain is susceptible to experience; greatest during first
several years of life; brain is more resilient
Sensitive period - Answer✔Time when organism is particularly susceptible to environmental
influences
Brain development in infants is best supported by... - Answer✔Cuddling, talking/singing, and
playing
Rhythms - Answer✔Repetitive, cyclical patterns of behavior
States - Answer✔The degree of awareness an infant displays to both internal and external
stimulation
Infant sleep - Answer✔Sleep 16-17 hours daily; sleep stages (circadian rhythms) are out of
sync/opposite to parents during early infancy; most do not sleep through the night for several
months
Infant REM sleep - Answer✔REM is associated with dreaming; REM takes up half of infant's
sleep; infant brain waves are different than the dreaming sleep of adults
Autostimulation - Answer✔The brain stimulating itself
Sudden infant death syndrome - Answer✔Unexplained death of a seemingly healthy baby; most
susceptible from 1 month to 1 year; affects about 2500 infants in US yearly; no cause has been
found; leading cause of death in first year of life
APA suggestions for infant sleep - Answer✔Before a baby can flip themselves, the APA
recommends that they sleep on their back in a crib with nothing else (no blankets, stuffed
animals, etc.)
Reflexes - Answer✔Unlearned, organized, involuntary responses that occur automatically in the
presence of certain stimuli (some stay throughout life, others disappear)
Infant reflexes - Answer✔Grasping, eye blink (blinking when touched or exposed to bright
light), swimming, startle, moro (feels like they are falling), rooting (turning head when touched
near mouth)
Ethnic and cultural differences may affect the way _____________ are displayed in infants -
Answer✔Reflexes
Gross motor skills in first year - Answer✔(Can vary widely from child to child)
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