The following is what type of experimental design? R Group A T (high level) M R Group B T (low level) M
a. completely randomized within-group design
b. multilevel completely randomized design
c. completely randomized design
d. completely multilevel within-group design
C
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Mary arrives home to find her son washing the dirty dishes left from his party the night before. When she discovers his first-semester grade report on the table and sees that he got straight A's, she rewards him by relieving him of the unpleasant task of finishing the dishes. Which operant process does this example illustrate?
A. Positive reinforcement B. Negative reinforcement C. Extinction D. Punishment
Shelby is 6 years old. During middle childhood, her physical growth will most likely
a. be steady until the adolescent growth spurt. b. show dramatic spurts. c. show rapid gains in height, but slow steady gains in weight. d. show rapid gains in weight, but slow steady gains in height.
Light waves of greater amplitude cause colors to appear
a. dull or "washed out.". b. brighter. c. saturated. d. transparent.
A student proposes to randomly assign residents of a fraternity house to either receive a brief intervention to reduce risky alcohol use or to not have an intervention. The findings indicated similar changes in both groups
The student should be concerned with a) diffusion of treatment b) history. c) random selection. d) statistical regression.