In an experiment, if the obtained results would occur by chance in less than five experiments out of 100, the results
a. were randomly assigned.
b. cannot be replicated.
c. were statistically significant.
d. were part of a meta-analysis.
ANSWER: c
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Which of the following would most likely make it hard for a stroke patient to eat from the dinner plate served on his or her hospital tray?
a. ?prosopagnosia b. ?apraxia c. ?aphasia d. ?paraphasias
Which outcome is possible in a 2 x 2 factorial design?
a. two main effects and two interactions b. a main effect for one factor, no main effect for the other factor, and two interactions c. no main effect for either factor and one interaction d. a four-way interaction
In his investigations of memory, Ebbinghaus studied long lists of:
a) lines from poems. b) book titles. c) nonsense syllables. d) single syllable words.
Elliot and Niesta (2008) tested the hypothesis that men would find a woman more attractive when she was surrounded by a red background than when she was surrounded by other colors. In their first study the researchers compared a woman in front of a red background and a woman in front of a white background. The possibility that in this study the white background was brighter than the red
background represents which of the following? a. A secondary variable. b. An alternative explanation. c. A threat to construction validity. d. A threat to external validity.