Researchers believe that political attitudes, religious interests, values, and attitudes toward human sexuality do not have genetic components

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.

Regarding brain cells regeneration and repair, which of the following statements is FALSE?

a. Constraint-induced movement therapy involves restraining a patient's good arm, which forces his or her impaired arm to be more active and increases neurogenesis in the damaged part of the brain. b. Doctors are testing a method in which drugs that speed up neurogenesis are injected into the damaged areas of the brain. c. Because of aging, a healthy 75-year-old brain has only about 75 percent of the brain cells of a healthy 25-year-old brain. d. Although the brain loses cells daily, it simultaneously grows new neurons to replace them.