Our perception of the richness, or saturation, of a color is affected mainly by
a. the wavelength of light waves.
b. the amplitude of light waves.
c. the purity of light waves.
d. the saturation of light waves.
C
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What is meant by selective attrition? a. Some participants fail to answer all the questions on a survey
b. Some participants respond to demand characteristics, and others don't. c. Those who volunteer for a study may be unrepresentative of the population. d. Some participants quit before the study finishes.
Changing traditional gender roles
a. are often regarded as a step in the right direction. b. are related to more married women entering the workforce. c. create new potential conflict between marital partners. d. affect all of these.
Which of the following has NOT been shown to boost the immune system?
a. support groups b. positive emotions, such as laughter c. guided imagery d. upsetting emotions, such as anger
Unlike friendship, romantic love usually involves
a. an unbalanced social exchange. b. lowered emotional arousal. c. contrasting needs. d. mutual absorption.