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Author Question: By 9 to 12 months, infants can pick up objects with their thumb and a single finger, called a. a ... (Read 148 times)

jparksx

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on: Jun 22, 2018
By 9 to 12 months, infants can pick up objects with their thumb and a single finger, called
 
  a. a grasping reflex. c. directed reaching.
  b. prereaching. d. a pincer grasp.

Question 2

From an evolutionary perspective, precise hand control was probably the main advantage derived from
 
  a. upright walking. c. the transition from hunters to gatherers.
  b. increased brain size. d. constant movement from place to place.


gcook

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Reply #1 on: Jun 22, 2018
Answer to Question 1

D

Answer to Question 2

A


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