A researcher studies language development by selecting a sample of 2-year-old children,a sample of 3-year-old children,and a sample of 4-year-old children.Each child's language skill is measured and the researcher plans to compare the scores for the three groups.This study is an example of
A)a time-series design.
B)an interrupted time-series design.
C)a cross-sectional developmental design.
D)a longitudinal developmental design.

Question

Quizplus · Accepted Answer

This study is an example of a cross-sectional developmental design because the researcher is selecting different age groups at a single point in time and comparing their language skill scores. The researcher is not following the same group of children over time (longitudinal design) or measuring the same group before and after an intervention (interrupted time-series design).

A Researcher Studies Language Development by Selecting a Sample of 2-Year-Old