Jacob generally feels out of control. He also has fainting spells and episodes of trembling, uncontrollable screaming and crying, and outbursts of verbal and physical aggressiveness. His symptoms sound most like those of ______

Advanced topic: ?(X–GM)2

A) equals the sum of squared deviations of scores from their group's mean. B) ignores the group a score is in. C) is always smaller than ?(X–M)2. D) is used to determine the grand mean.

As people grow older, they tend to become more

a. open to experience and extroverted. b. emotionally unstable and disagreeable. c. conscientious and agreeable. d. neurotic and introverted.