Which of the following play behaviors is a cause for concern in a child?
A)spending long periods of time in solitary play
B)aimless wandering and hovering near peers
C)simple, repetitive motor movements without objects
D)kneading clay with no intent to make something
A researcher hangs a mobile over the crib of 4-month-old Anya. When the researcher
attaches Anya’s foot to the mobile with a long cord, Anya can, by kicking, make the mobile
turn. The turning of the mobile is an example of
A)a reinforcer.
B)punishment.
C)an unconditioned stimulus.
D)an conditioned response.
Which of the following statements best describes how current theorists view the period of
adolescence?
A)They argue that adolescence is mainly a period of upheaval, crisis, and inner
soul-searching.
B)They view identity development as a temporary traumatic process resulting in a mature