In class, Dr. Heyman discussed the relation between vocabulary and shoe size, and made the point that these factors are:
a. causally related but show no correlation
b. negatively correlated and the causal relation tends to be bidirectional
c. positively correlated but probably caused by a third factor
d. causally related but the direction of the correlation cannot be established
Ans: c. positively correlated but probably caused by a third factor
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Which researcher would primarily be interested in studying physical development?
A. Dr. Bettencourt, who wants to examine interaction patterns among children on the playground B. Dr. Kwan, who is interested in which senses a child uses most often C. Dr. Ramirez, who is interested in how shyness develops over time D. Dr. Fox, who studies adolescents' test-taking strategies
What is one contribution of emotions to survival?
a. The first indication of sensorimotor adaptation b. To provide a mechanism for species variability c. To serve as adult-infant communication d. To enhance fitness
The overall electrical charge of a neuron that is "at rest" is:
a) hyperneutral. b) positive. c) negative. d) neutral.
Approximately what percent of American marriages end in divorce?
A) 30 B) 40 C) 50 D) 60