PSY 336 - EXAM 2 QUESTIONS AND ANSWERS
100% VERIFIED
What part of the infant will grow first, and what direction do infants grow? - ANSWER
Head grows first
Growth occurs from head to tail
What does environment do for infant development? - ANSWER Provides experiences
that help shape brain development, motor skills, perceptual abilities, and learned
behaviors
Social learning theory
At birth how much less does the infant brain weigh compared to humans? By one year
what happens? How do measure this? - ANSWER 1/4 of weight at birth
Tripled weight by one year
Measure head circumference
What are the lobes of the brain?
Which lobes develop first? - ANSWER frontal - skilled movements, memory
parietal - sensory perception
occipital - hearing
temporal - visual
Occipital and temporal develop first
About how much time does the infant spend sleeping? How many hours does the
average newborn sleep per day? - ANSWER 80%
16 hours per day
, What is active sleep? - ANSWER Stir often, move arms and legs, crinkle faces, breathe
faster, more irregular, rapid eye movements behind closed libs
What is passive sleep? - ANSWER Lie still, breath slowly, and regularly
How often do changes in sleep state occur? - ANSWER During 1st few months, states
change often but by 5 months it is more predictable
What are saccadic eye movements? - ANSWER rapid, jerky eye movements that occur
when the gaze is shifted to a new object
What is pursuit eye movement? - ANSWER smooth, continuous eye motions used to
track a moving object
How much of their time do infants spend crying? - ANSWER 10%
What are the 3 distinct crying patterns? - ANSWER Hungry
Upset
Pain
Describe the babinski reflex - ANSWER When foot is stroked from heal to toes, toes fan
out and foot twists
Describe the moro reflex - ANSWER Startled = infant extends arms, brings them
together, and grasps fingers
Describe the tonic neck reflex - ANSWER "Fencing position"
Infant on back, tend to turn head one side, extend arm and leg on that side
100% VERIFIED
What part of the infant will grow first, and what direction do infants grow? - ANSWER
Head grows first
Growth occurs from head to tail
What does environment do for infant development? - ANSWER Provides experiences
that help shape brain development, motor skills, perceptual abilities, and learned
behaviors
Social learning theory
At birth how much less does the infant brain weigh compared to humans? By one year
what happens? How do measure this? - ANSWER 1/4 of weight at birth
Tripled weight by one year
Measure head circumference
What are the lobes of the brain?
Which lobes develop first? - ANSWER frontal - skilled movements, memory
parietal - sensory perception
occipital - hearing
temporal - visual
Occipital and temporal develop first
About how much time does the infant spend sleeping? How many hours does the
average newborn sleep per day? - ANSWER 80%
16 hours per day
, What is active sleep? - ANSWER Stir often, move arms and legs, crinkle faces, breathe
faster, more irregular, rapid eye movements behind closed libs
What is passive sleep? - ANSWER Lie still, breath slowly, and regularly
How often do changes in sleep state occur? - ANSWER During 1st few months, states
change often but by 5 months it is more predictable
What are saccadic eye movements? - ANSWER rapid, jerky eye movements that occur
when the gaze is shifted to a new object
What is pursuit eye movement? - ANSWER smooth, continuous eye motions used to
track a moving object
How much of their time do infants spend crying? - ANSWER 10%
What are the 3 distinct crying patterns? - ANSWER Hungry
Upset
Pain
Describe the babinski reflex - ANSWER When foot is stroked from heal to toes, toes fan
out and foot twists
Describe the moro reflex - ANSWER Startled = infant extends arms, brings them
together, and grasps fingers
Describe the tonic neck reflex - ANSWER "Fencing position"
Infant on back, tend to turn head one side, extend arm and leg on that side
