Replication of a study is important to
A. express the expectations of the study.
B. interpret the results of the study.
C. confirm the results of the study.
D. formulate the hypothesis of the study.
Answer: C
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Which of the following does not appear to trigger the production of higher levels of estrogen associated with the initiation of puberty in girls?
a. A certain body weight b. A particular amount of body fat c. The secretion of leptin d. Reaching a specific chronological age
Heritability refers to
a. how much of a trait is influenced by genetic factors for a specific individual. b. the proportion of the differences in a trait among a group of people that is due to genetic differences among these people. c. the percentage of pairs of people where, if one person in the pair has the trait in question, the other person in the pair also has the trait in question. d. the degree to which one trait increases with increases in another trait.
When curare blocks the action of acetylcholine it
a. prevents muscle activation, causing paralysis. b. stimulates muscle activity, causing convulsions. c. retards cell growth, causing paralysis. d. causes neurotransmitters to both inhibit and excite activity.
Systematic desensitization is based on
a. counterconditioning. b. operant conditioning. c. stimulus generalization. d. spontaneous recovery.