A researcher who selects a sample of people of varying ages and studies them at one point in time is, by definition, using a __________ design in his study.
A) cohort
B) longitudinal
C) behavior genetics
D) cross-sectional

Question

Quizplus · Accepted Answer

A cross-sectional design involves selecting a sample of participants from different age groups and studying them at one point in time. This is in contrast to a longitudinal design, which would involve studying the same group of people over a period of time.

A Researcher Who Selects a Sample of People of Varying