Longitudinal research on IQ change during adulthood indicates that
a. crystallized intelligence peaks in young adulthood and then declines steadily.
b. both fluid and crystallized and fluid intelligence peak in middle adulthood and then decline steadily.
c. crystallized intelligence peaks and then declines, while fluid intelligence remains steady into middle-old adulthood.
d. fluid intelligence peaks and then declines, while crystallized intelligence remains steady into middle-old adulthood.
d
You might also like to view...
A characteristic, usually a numerical value that describes a sample, is called a ____
a. parameter b. statistic c. variable d. constant
In their field experiment, Leyens et al. (1975) evaluated the impact of media exposure on the aggression of Belgian delinquents. In this study, the authors found that viewing violent films
a. resulted in a significant increase in physical and verbal aggression. b. did not affect verbal and physical aggression. c. increased verbal aggression but had no impact on physical aggression. d. increased physical aggression but reduced verbal aggression.
Which of the following is one of the critical-thinking guidelines described in the textbook?
a. don't overthink; go with your gut reaction b. define your terms c. accept all opinions as equally valid d. simplify as much as possible
________ are demand characteristics that may signal participants that a change in the participant's attitude is needed to conform to his or her new role as a research participant.
A. Role attitude cues B. Role definition cues C. Participant biases D. None of the answers is correct.