In a study examining the effects of time of day (morning or afternoon) and temperature (cool, normal, or warm) on worker productivity, how many main effects are possible?
a. 3
b. 6
c. 5
d. 2
d
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The myelin sheath is analogous to which piece of electronic equipment?
A) a surge protector B) wire insulation C) an alternating-current adapter D) a battery
The auditory system localizes sounds 3,000 Hz and above by detecting ______.
A. arrival time differences B. phase differences C. intensity differences D. morphometric analysis
Danny measures couples’ feelings of closeness in a dark or a brightly lit room. In this study, the room’s brightness is the ______.
A. control variable B. independent variable C. dependent variable D. confound
According to Erikson's psychosocial theory, a teenage girl would be facing the crisis of
A. industry versus inferiority. B. identity versus identity confusion. C. intimacy versus isolation. D. integrity versus despair.