Bob constantly leans back in his chair. His teacher sees this as potentially dangerous. The teacher now praises Bob when all four legs of his chair are on the floor, to reduce leaning back. The teacher is using which procedure? a. Positive reinforcement b. Negative reinforcement c. DRO d. DRI

In a study of a weight loss program, 40 subjects lost a mean of 3.0 lb after 12 months. does the weight loss program have practical significance? a. yes, because the weight loss program worked and the subjects lost a mean of 3.0 lb. b. no, because the mean weight loss of 3.0 lb after one year does not seem to justify the program. c. no, because the sample of 40 subjects was too small to determine if the program was useful. d. yes, because the mean weight loss of 3.0 lb after one year does seems to justify the program.

The bones of the extremities are parts of the a-appendicular skeleton b-axial skeleton c-long bone group d-medial skeleton

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