Which characteristic does NOT describe a normal distribution?
A) It is symmetrical.
B) It has a peak in the middle.
C) It is positively skewed.
D) It trails off at both ends.
C) It is positively skewed.
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How do male groups differ from female groups?
a. Male groups are smaller than female groups. b. Male groups involve more social support and bonding than female groups do. c. Male groups are more enduring than female groups. d. Male groups are larger than female groups.
Anabel has a favorable attitude toward fishing. In explaining Anabel's attitude, a psychologist who took an operant conditioning perspective would consider:
a. the number of times that Anabel has been fishing b. Anabel's history of reinforcement and punishment when she has been fishing c. how Anabel's family and friends feel about fishing d. whether Anabel enjoys other outdoor activities
What is the relationship between the motor neurons and muscle fibers?
A. The more muscle fibers a neuron innervates, the more precise the movements. B. The more neurons controlled by a single muscle fiber, the more precise the movements. C. The fewer muscle fibers controlled by a single neuron, the more precise the movements. D. Each neuron innervates only one muscle fiber.
Recall that participants in an experiment described in the text (Toi & Batson, 1982) listened to an (alleged) radio interview in which a student in their introductory psychology class described an accident that caused her to fall behind in the course
Some participants were told that Carol would soon be returning to their class. According to the research, why is this referred to as a "high cost" condition? a. Carol was still in a wheelchair, and it would be hard for her to get to class. b. Every time participants saw her, they would feel guilty if they didn't help her. c. Participants would have to go out of their way to copy their notes for Carol. d. Every time participants saw her, they would be able to empathize with her.