Wilhelm Wundt's trained introspectors had to make 10,000 practice observations before they were allowed to participate in an actual study

Regarding stimulus motives, which of the following statements is FALSE?

a. Stimulus motives disappear as people age. b. Stimulus motives encourage organisms to explore their environments and manipulate objects. c. Stimulus motives may represent a biologically based need to maintain an optimal level of arousal. d. Stimulus motives are observed in humans as well as other animals. e. Stimulus motives challenge the idea that all drives satisfy basic needs.

A coherent group of principles and hypotheses that explain some aspect of an area of study is a(n) ____

a. valid measure b. theory c. correlation d. operational definition