A(n) ______ hypothesis predicts no effect, whereas a(n) ______ hypothesis predicts an effect.
a. one-tailed; two-tailed
b. two-tailed; one-tailed
c. null; alternative
d. alternative; null
Ans: C
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Sing Tung is given a new drug. As a result, his normal sleep cycle is altered. He moves from an REM stage to NREM stages 1-2-3 and then abruptly awakens. The experimenter has recorded his brain activity. Which of the following is not characteristic of Sing Tung's altered sleep cycle?
A. A great deal of dream activity was present. B. Some alpha waves were present. C. Many high amplitude, slow brain waves were present. D. Muscle tone was similar to the awake stage.
How does the sleep of an average adult change across the night?
a) REM periods increase in length. b) Stage 2 sleep drops out completely. c) The amount of Stage 4 sleep increases. d) There are more alpha brain waves each hour.
In the quotation opening the chapter, "Happiness Is More Strongly...," Michael
Argyle noted three conditions of life that make a difference to happiness. Which was not one of them? (a) social relations (b) work (c) leisure (d) possessions
What is epigenetics? How are epigenetic changes different than genetic changes?
What will be an ideal response?