About ______ in 1,000 males in the United States develop anorexia nervosa

Which theory predicts that people growing up in nonaggressive cultures will be nonaggressive, while those raised in cultures with aggressive heroes and other aggressive models will develop aggressive responses?

a. instinctual theory b. social learning theory c. humanistic theory d. psychoanalytical theory

When experiencing one condition in an experiment changes the participants in some way, we say that _____ effects are present in the experiment

a. reliability c. multiple treatment b. validity d. measurement