Schaie's research, based on the Seattle Longitudinal Study of Aging, has shown that
many of our intellectual abilities increase until the __________ and then remain stable
until the __________.
a. mid-20s; early 30s
b. late 20s; late 30s or early 40s
c. late 40s; mid 50s or early 60s
d. late 30s or early 40s; mid-50s or early 60s
e. early 30s; early 40s
d. late 30s or early 40s; mid-50s or early 60s
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Right now, you are moving your eyes as you read this question on your exam. The letters that you can see at any given moment—in between eye movements—would be called
a. a fixation. b. the perceptual span. c. a saccadic eye movement. d. the fovea.
Which of the following is an example of demand characteristics affecting an experiment?
a. An experimenter draws the wrong conclusions from a study because she did not use the correct statistical analysis. b. A participant changes his response to a question because he has the feeling that the experimenter wants him to do so. c. An experimenter stops using a test because it does not appear to be reliable. d. A participant in a double-blind experiment believes she is in the control group.