Helmholtz's explanation of color vision is called the ________
a) opponent-process theory
b) additive color mixing theory
c) trichromatic theory
d) reductive color mixing theory
ANS: c
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Laverne works on an assembly line, spotting defective bottles. Recently, her performance has been poor and her boss warns her that if she misses one more defective bottle, she will be fired. Laverne's reaction time will ____ because of the changed ____.?
a. ?increase; expectancy b. ?increase; speed-accuracy tradeoff c. ?decrease; complexity d. ?decrease; stimulus-response compatibility
The satiety center of the brain is found in the __________ of the hypothalamus
a. bottom middle part b. side portions c. top part d. direct center
Which of the following is true when it comes to middle-school-age children's friendships?
a) Children tend to make an equal number of same-race and different-race friends. b) Children can show a high degree of mutual acceptance. c) Children tend to make same-gender but different-race group friends. d) Children cannot make more different-race friendships as they age.
A researcher uses a fixed format self report scale to assess peoples' feelings about an issue using a set of items that consist of pairs of adjectives. What type of scale is being used?
a. The Guttman scale b. The Semantic Differential c. The Acquiescent Response Scale d. The Likert scale