An industrial designer wants to determine if the new design for a piece of office equipment will result in fewer errors. The designer sets up a machine with the old design in one room and a machine with the new design in a second room. He counts how many errors are made using each of the two machines. In this study, the number of errors that are made would be
a. a control variable.
b. the dependent variable.
c. the independent variable.
d. an extraneous variable.
B
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As a person falls into deeper sleep, his or her pattern of brain-wave activity becomes both ____ in frequency and ____ in amplitude
a. slower; higher b. faster; higher c. slower; lower d. faster; lower
Stephon knows someone whose brother received a very lucrative contract to play professional basketball for the National Basketball Association (NBA). With this success story in mind, he ignores the statistics that indicate a very low probability that anyone will make it to the NBA and overestimates his own chances of making it. This scenario best illustrates
a. the covariation principle. b. the base-rate fallacy. c. non-correspondent inferences. d. the actor-observer effect.
Ronald has set up a series of challenging physical goals in progression over the spring break. A likely effect of his activities will be
a. a boring spring break. b. posttraumatic growth. c. a positive effect from the stress of stimulation and challenge. d. a positive effect of stress due to psychological preparation for coming stress.
In the regression discontinuity analysis model, the pretest is adjusted by ____
a. subtracting the cutoff b. multiplying by the reliability estimate c. multiplying by ? d. subtracting zo