Because participants are measured only once in the cross-sectional design, researchers need not be concerned about difficulties like _____________ and ____________.
A) cohort effects; practice effects
B) selective attrition; cohort effects
C) cohort effects; biased sampling
D) participant dropout; practice effects

Question

Quizplus · Accepted Answer

In a cross-sectional design, participants are measured at a single point in time, so there is no opportunity for participant dropout or practice effects, which occur over time in longitudinal studies.

Because Participants Are Measured Only Once in the Cross-Sectional Design