Which manipulation of the time period between treatment conditions reduces the chances of history influencing the results of a within-subjects experiment?
a. shortening
b. lengthening
c. shortening and then lengthening
d. randomly varying the period
a
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A proposed explanation for a situation, usually taking the form “if A happens then B will be the result” is called a(n) ____
a. theory b. research proposal c. experiment d. hypothesis
Signal detection studies allow for the determination of perceptual sensitivity separately from the observer's:
A) decision-making strategy. B) absolute threshold. C) difference threshold. D) background noise.
The three main types of consequences of stress are
A) direct physiological effects, harmful behaviors, and psychosomatic effects. B) harmful behaviors, increased stressors, and indirect health-related behaviors. C) direct physiological effects, psychosomatic effects, and indirect health-related behaviors. D) direct physiological effects, harmful behaviors, and indirect health-related behaviors.
Changes in the composition of the U.S. population will lead American developmentalists to give more attention to issues of __________
a) diversity b) classroom technology c) special needs children d) genetic research