Gerard conducts a study to examine the effect of an exercise program on obese people. The participants must exercise for one hour every day for six months. By the end of the fourth month, Gerard finds that 75 percent of the participants have dropped out of the study. What kind of problem has Gerard encountered in his study?

A. maturation
B. attrition
C. morbidity
D. selection


Answer: B

Psychology

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Who would be most likely to argue that the vast majority of personality is formed between birth and age six?

a. Fred, who is a psychodynamic theorist b. Barney, who is a psychometric theorist c. Wilma, who is a social learning theorist d. Betty, who is a behavioral theorist

Psychology

A difference between the dissociation theory and the response set theory of hypnosis is that dissociation theory claims that ____

a. ?hypnotized people lose consciousness, while response set theory claims that they remain conscious b. ?hypnosis is an altered state of consciousness, while response set theory claims it is not an altered state c. ?hypnotized people are acting out a social role, while response set theory claims they are dividing their consciousness into two states d. ?hypnosis shuts down one’s sense of morality, while response set theory claims that it leaves one’s sense of morality intact

Psychology

Which of the following is the correct order of Piaget's stages of cognitive development?

a) preoperational; concrete operations; sensorimotor; formal operations b) concrete operations; sensorimotor; preoperational; formal operations c) sensorimotor; preoperational; concrete operations; formal operations d) preoperational; sensorimotor; concrete operations; formal operations

Psychology

While riding through the countryside one day, you happen to come upon a curious sight -- a chick following a group of ducklings and a mother duck. What could have happened to produce this strange sight?

a. It is probably just an accident. b. The mother duck was the first moving object the chick saw after being hatched. c. The chick is probably a genetic accident in which instinctual tendencies are modified. d. The mother hen rejected her chick.

Psychology