In an experiment on the effects of massed versus distributed practice on learning, introductory psychology students who volunteered for extra credit were randomly assigned to one of two groups Both groups were to practice a perceptual-motor task five times for 10 minutes each. Group 1 did all five 10-minute practice sessions in one evening while group 2 was asked to do one 10-minute practice session a night for five consecutive nights. All of the participants in Group 1 completed the experiment, but only 30% of the participants in Group 2 showed up for all five nights. This study is an example of confounding by
a. differential attrition.
b. selection bias.
c. history.
d. demand characteristics.
A
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Laura is a politician in Texas looking forward to a long political career. From which of the following minorities in Texas should she seek support?
a. Anglo Texans b. Hispanic Texans c. African American Texans d. Asian American Texans
Lobbyists provide information about legislation that is hard to come by without expert help.
Answer the following statement true (T) or false (F)
Elizabeth Cady Stanton's statement that "all men and women are created equal, endowed with the same inalienable rights" is modeled after a similar statement found in the __________
Fill in the blanks with correct word
Zinner et al. (1997) observed the locomotion, grooming, approach, and threat behavior of baboons by simply recording whether a target behavior occurs or does not occur in an observation interval. Such recording is called
a. cluster sampling. b. continuous real-time sampling. c. one-zero sampling. d. time-interval sampling.