A normal distribution has a mean of µ = 100 with ? = 20 . If one score is randomly selected from this distribution, what is the probability that the score will have a value between X = 90 and X = 110?
a. 0.6915 c. 0.1915
b. 0.3085 d. 0.3830
D
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Some studies have shown that adolescents who limited their work to no more than ________ hours a week could effectively balance school and work
a. 5 b. 15 c. 20 d. 30
What is the "phi" phenomenon?
A. When one stationary object alternates with another, we see movement. B. People who know each other well are likely to think the same thing at the same time. C. The more times one has been depressed, the easier it is to become depressed again. D. A sound heard at the same time as a visual stimulus seems to come from that object.
A client tells his behavioral therapist that he has a goal of jogging for 30 minutes every other day. The therapist helps the client create a system by which he rewards himself first for putting on jogging clothes and doing any kind of exercise for any length of time, then for jogging for 5 minutes, then for jogging for 15 minutes, and ultimately for jogging for 30 minutes. This technique is best
described as a. shaping. b. behavioral instruction. c. time-out. d. a token economy.
Kerry is a straight A student
She does not really enjoy studying, but her siblings are all straight A students and her parents are extremely proud of that. She does not want to disappoint her parents or be labeled the "dumb sister," so she often stays up all night studying even though she is not really interested in the class. She demonstrates _____ a) mastery/avoidance. b) performance/approach. c) performance/avoidance. d) mastery/approach.