During his work on kinesthesis, Weber made the startling observation that the just noticeable difference is a constant fraction of the standard weight. For lifted weights, that fraction is:?
a. ?1/20
b. ?1/30
c. ?1/35
d. ?1/40
ANSWER:
d
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Regarding recent evidence on marijuana and its active ingredient THC, which of the following is a FALSE statement?
a. THC receptors have been found in the brain areas involved in the control of skilled movement. b. THC accumulates in the fatty tissues of the reproductive organs. c. There is some evidence that THC damages parts of the brain important for memory. d. Several hundred overdose deaths from marijuana are reported every year.
Although rough-and-tumble play declines in adolescence, when it does occur
A) its meaning is linked to aggression. B) it is used to reconcile a disagreement. C) it is often between members of the other sex. D) it is often accompanied by antisocial behavior.
Which of the following statements is true of a descriptive study?
A. It involves the testing of hypotheses. B. It usually occurs during the exploratory phase of research. C. The researcher makes a prediction and tries to control variables. D. The researcher avoids patterns that might lead to predictions.
Older adults experience insomnia at double the rate of younger people
Indicate whether the statement is true or false