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Explain how biology and environment interact in the development of gross motor skills. What would you advise for parents who are worried that their 14-month-old baby hasn't begun walking independently yet?

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The development and order of gross motor...

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According to Skinner, a grandfather who smiles whenever the baby says "pa-pa" is providing reinforcement for talking.

A) True
B) False

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Some herbs and plants contain natural substances that are medicinal, and thus the foods a particular culture eats may aid human survival.

A) True
B) False

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By _____ months of age, around 50 percent of babies can usually sit up unsupported.


A) 2
B) 4
C) 6
D) 8

E) All of the above
F) B) and D)

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According to the sociocultural perspective, the focus of early communication for infants younger than 12 months is _____ .


A) context
B) content
C) emotion
D) sound

E) All of the above
F) A) and B)

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Binocular vision refers to the ability to _____.


A) focus on objects at a distance
B) bring an object in and out of focus
C) focus on an object with both eyes
D) visually distinguish between similar colors

E) B) and D)
F) A) and B)

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Geoff has begun uttering one-word holophrases (e.g., "Dada!") . About how old is Geoff likely to be?


A) 3 months old
B) 6 months old
C) 1 year old
D) 2 years old

E) A) and B)
F) None of the above

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The body part with the most advanced fine motor skills is the _____.

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Parents are told that their newborn is in the 90th percentile for height. This means that their child is _____.


A) above average in height.
B) below average in height.
C) average in height.
D) 90 percent of the desired height for his weight.

E) All of the above
F) A) and D)

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The language acquisition device (LAD) was proposed by Chomsky to explain _____.


A) children's vocabulary spurts
B) the mean length of utterance
C) the systematic differences among languages
D) children's ability to derive the rules of grammar quickly and effectively

E) None of the above
F) A) and B)

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The fact that 3-month-olds do not spontaneously remember a kicking strategy that they learned two weeks earlier suggests that _____.


A) infant amnesia is a valid term
B) infants cannot remember anything for very long
C) infant memory is fragile
D) mobiles do not induce very durable memories

E) All of the above
F) A) and B)

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Piaget believed children begin to develop cognitively at _____.


A) birth
B) 3 months
C) 1 year
D) 18 months

E) All of the above
F) B) and D)

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When a 21-month-old begins to utter two-word combinations, it is apparent that the toddler has begun to comprehend _____ concepts.

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The fats and sugars used in formula make it more digestible than breast milk.

A) True
B) False

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Baby Hugh enjoys playing with his father's keys, but when his father takes them away, Hugh does not search for them. Piaget would say that is because Hugh does not understand _____.


A) conservation
B) object permanence
C) egocentrism
D) affordances

E) A) and D)
F) A) and C)

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Worldwide, more than _____ children were born between 1950 and 2015.

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Chomsky argued that babies are born to learn language.

A) True
B) False

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_____ appears to be an effective pain reliever for newborns.

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You see a beautiful yellow flower while walking through a meadow. Your eyes seeing the flower is a matter of _____. Your brain determining that the flower is yellow is a matter of _____. Imagining how the flower will look in a vase would demonstrate _____.


A) perception; knowing; cognition
B) sensation; perception; knowing
C) perception; sensation; knowing
D) sensation; perception; cognition

E) B) and C)
F) A) and C)

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When newborns are held horizontally on their stomachs, they stretch out their arms and legs; this is the _____ reflex.

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