The results of the Seattle Longitudinal Study discovered that many aspects of intelligence reach their peak during which developmental period?

Which of these is a legally permissible use of a polygraph examination?

a) a department store uses it to select employees b) a prosecutor uses it as evidence in a murder trial c) a police detective uses it to verify witness statements d) a school uses it to determine who cheated on the final exam

In order to choose questions for a final version of a test, the examiners created a graph with difficulty on one axis and discriminability on the other. The examiners should use the questions that

a. all above the .50-point on the discriminability axis. b. fall below the .50 point on the discriminability axis. c. fall between .30 and .70 on difficulty and above .30 on discriminability. d. fall above the .50 point on discriminability and difficulty.