When a researcher creates a study that does not involve random assignment of participants to groups, any differences in group performance can be due to which threat to internal validity?

a. History
b. Maturation
c. Selection
d. Statistical regression


C

Psychology

You might also like to view...

Which of the following is the best definition of "stereotyping"?

a. A negative attitude or feeling toward an individual based solely on that individual's membership in a certain group b. A negative attitude or feeling toward a racial or ethnic group c. Unequal treatment of different people based on the groups or categories to which they belong d. Beliefs that associate groups of people with certain traits

Psychology

Which 50-year-old man is MOST likely to suffer from coronary heart disease?

A) Jorge, who is an extrovert and likes to go out with friends B) Jack, who is 5 pounds overweight C) Leo, who smokes a cigarette a day D) Brett, who physically confronts people when they get in his way

Psychology

Important elements of a stimulus pattern, such as lines, shapes, edges, spots, and colors, are referred to as

a. perceptual features. b. sensory amplifiers. c. perceptual transducers. d. phosphenes.

Psychology

Poor emotion regulation is seen in….

A. Patients with anorexia nervosa and their close family members B. Patients with anorexia nervosa, but not their close family members C. Patients with binge eating disorder and their close family members D. Patients with binge eating disorder, but not their close family members

Psychology