A researcher who selects a sample of people of varying ages and studies them at one point in time is by definition, using a ______ design
a) cohort design
b) longitudinal design
c) lifespan design
d) cross-sectional design
ANS: D, A cross-sectional design studies several different age groups at the same time.
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Examination of tests such as the WAIS and WISC-R have found that white males are more often depicted in test items than other groups. What has research shown about such differences?
a. No one has established that these differences affect test performance. b. They have a greater impact on females than on males. c. They have a substantial impact on younger children but little impact on adults. d. They account for a large percentage of test score differences.
According to arousal theory, which of the following statements is FALSE?
a. An individual becomes uncomfortable when arousal is too low or too high. b. The right mix of activities prevents boredom and overstimulation. c. The arousal theory explains the activation of our learned needs for achievement and power. d. Most adults vary their activities to keep arousal at a comfortable level of activation.
You must use degree of freedom in calculation of sample standard deviation to correct for the fact that ______.
A. the sample will always contribute fewer scores than the population B. the sample is never going to be representative of the population C. the variance will be bigger as the sample size increases D. the sample is always going to be bigger than the population
The Fusiform effect suggests that people tend to behave in ways that are consistent with others'expectations
Indicate whether this statement is true or false.