Recent evidence regarding the genetic influence on most psychological disorders has shown that
A) single genes are usually responsible for psychological disorders.
B) genes that influence psychopathology are usually recessive.
C) there is no evidence that genes influence psychopathology.
D) multiple genes interact, with each gene contributing a small effect.

Question

Quizplus · Accepted Answer

Recent research has shown that psychological disorders are influenced by the interaction of multiple genes, each contributing a small effect. There is no single gene responsible for these disorders, and they are not usually recessive. There is strong evidence that genes do play a role in the development of psychopathology.

Recent Evidence Regarding the Genetic Influence on Most Psychological Disorders