Which of the following is true about teacher attention?
a. It is always a reinforcer.
b. It can change behavior only in students to whom it was directed.
c. It may act as a reinforcer even when intended as a punishment.
d. It does not reinforce behavior.
ANSWER: c
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Which of the following is not possible in ex post facto research?
a. Measurement b. Observation c. Random sampling d. Random assignment e. Selection
Three of the following elementary school teachers are using strategies that are appropriate for students with intellectual disabilities. Which teacher is not using an appropriate strategy?
a. Ms. Akers gives feedback about specific behaviors. b. Mr. Britton gives students explicit instructions, such as, "Hang up your coat, then come sit at your desk and take out a pencil." c. Ms. Connors keeps a close eye on students and gives them instructions at least once every five minutes. d. Mr. DiStefano presents new material at a slower pace than he does for his nondisabled students.
The group of adolescents who are disproportionately affected by AIDS/HIV are
a. Asian/Pacific Islanders. b. Black and Hispanic. c. Native Americans. d. Whites.
A sample of size n is used to estimate the confidence interval for a proportion. Upon review, you consider the standard deviation too large. If you want to reduce your standard deviation so that it is a tenth (1/10) of the original size, what size sample do you need?
A. 10n B. 100n C. 1000n D. 10,000n