An interval midpoint is the middle ______ of an interval.
a. value
b. frequency
c. variable
d. significance
Ans: A
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Henry got a bad sunburn on his face when he was skiing last winter. Now, before he starts a day of skiing, he uses sunscreen on his face to prevent another sunburn. This is an example of
a. escape learning. b. avoidance learning. c. an unconditioned stimulus. d. shaping.
A-B designs are frequently used in behavior modification research
a. True b. False Indicate whether the statement is true or false
Wertheimer demonstrated that explanations of apparent movement based on learning were not plausible by showing that:
a. very young children experience apparent movement b. the phi phenomenon occurs in two directions at the same time c. primitive humans who have never experienced real movement still experience apparent movement d. even nonhuman animals experience apparent movement
In 2010, the Centers for Disease Control and Prevention reported that the number of persons in the United States who are newly infected with HIV each year is:
a. 8,750 b. less than 11,000 c. over 18,000 d. approximately 56,000 e. 78,200