Adam is conducting a study on cartoon violence in Saturday morning cartoons. He has defined cartoon violence as those acts that would result in serious bodily harm leading to a hospital visit.
Adam's definition of cartoon violence is an example of a(n) .
a. operational definition.
b. nominal definition.
c. behavioral definition.
d. attitudinal measure.
When selecting a research hypothesis, researchers can have either a or research hypothesis.
a. valid, reliable
b. nondirectional, directional
c. mutually exclusive, exhaustive
d. alternative, null
A probability sampling technique in which a researcher identifies naturally occurring clusters of individuals from a population to select from is called probability sampling.
a. cluster
b. simple
c. systematic
d. stratified
_________ variables are variables that influence all participants and cause the experimental results to be less clear.
a. Extraneous
b. Nuisance
c. Attrition
d. History
Brigham and Women's Hospital conducted a study with two groups of participants. One group was allowed to experience deep sleep, while the other group was deprived of deep sleep. Next, participants in both groups completed a visual task.
Results indicated that performance did improve on the visual task for participants in the group that experienced deep sleep. In this study, what type of research design was used?
a. within subjects design
b. between subjects design
c. within participants design
d. mixed subjects design
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