Natural selection is based on
a. individual variation in inherited characteristics and reproduction.
b. competition between individuals.
c. an unchanging environment.
d. the creation of new species.
e. the variability in breeding patterns.
b. competition between individuals.
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The observation that people often seek stimulation and that not all motives are aroused by internal states contradicts the _______ theory of motivation
a. incentive b. drive-reduction c. Gestalt d. cognitive
When photographs of facial expressions conveying different emotions were shown to subjects in different countries, the subjects:
a. tended to agree on the emotional meaning of the different expressions. b. rarely agreed on the emotional meaning of the different expressions. c. agreed only on expressions of anger and fear. d. none of the above