Cleveland is studying the effects of yoga (0 min; 30 min) and caffeine (none; 8 ounces of coffee) on irritability. He finds that yoga decreases irritability when participants have had no caffeine, but that it increases irritability when participants have had caffeine. Meanwhile, caffeine increases irritability but only when participants are not engaging in yoga. This is an example of ______.
A. a crossover interaction
B. an additive interaction
C. an antagonistic interaction
D. no interaction
Ans: C
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Answer:
If N < 30, to use the t test, the population of raw scores should be normally distributed
Indicate whether the statement is true or false
The key to avoiding inflexible ethnocentrism lies in our ___________ our own ethnocentrism.*
a. acceptance of b. resistance to c. awareness of d. willingness to ignore
Four-month-old Stewart is shown a video image of himself and a video image of another baby. He will probably
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