The necessarily limited set of issues on which policy makers focus their attention is best defined as the ______.

Compared with between-subjects designs, within-subjects designs are

A) more sensitive to effects of the independent variable. B) less sensitive to sequence effects. C) more sensitive to 4-way ANOVAs. D) less sensitive to participant needs.

Matching participants

A) becomes easier as the number of matching variables increases. B) increases error variance. C) is best when there are a small number of matching variables. D) requires equal numbers of males and females.