One reflection of the development of infants' short-term memory is their improvement ______________
a. at the task of object permanence
b. in their fine motor skills
c. in their gross motor skills
d. in their language skills
Answer: A
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Which of the following is least relevant to the experimental method?
a. internal validity b. random assignment c. independent variable d. random selection
Jordan watches his mother place chocolate cookies in a newly bought jar and go to her room for a nap. Jordan loves the cookies and wants to have some of them. He tries to open the cookie jar by pulling up the lid; he also tries rotating the lid in a clockwise direction. He finally realizes that there is a "Push" button to open the cookie jar. According to the substages of Piaget's sensorimotor stage of cognitive development, Jordan is most likely in the ________.
A. second substage B. third substage C. fourth substage D. fifth substage