When Choosing Between a Within-Participants Design and a Between-Participants Design

Multiple Choice

When choosing between a within-participants design and a between-participants design, one is often considering a tradeoff between

A) a more sensitive design with the former and a more controlled design with the latter.
B) internal validity with the former and an ability to generalize results to a larger population with the latter.
C) a more sensitive design with the former and a more economical design with the latter.
D) controlling for more extraneous variables with the former and having results that are more applicable to the "real world" with the latter.