Research on the effectiveness of charisma training programs suggests that the programs
A. have long-term positive effects on charisma levels.
B. cause higher levels of charisma.
C. have no effect on charisma levels.
D. are negatively correlated with levels of charisma.
Answer: A
Psychology
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By adding a control group in an interrupted time-series design, researchers hope to
a. increase nonsystematic variability. b. increase the internal validity of the study. c. decrease the clarity of the effects of the independent variable. d. decrease the reliability of dependent variable.
Psychology
By placing positron detectors around the head and sending data to a computer, it is possible to create a moving, color picture of changes in brain activity using a(n)
a. MRI. b. CT scan. c. PET scan. d. ESB recording.
Psychology