Question

Dr. Jenny Michael studies language development by selecting a sample of 2-year-old children, a sample of 6-year-old children, and a sample of 10-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. an interrupted time-series design b. a developmental time-series design c. a longitudinal design d. a cross-sectional design.

Answer 1

Option is incorrect because an interrupted time series design involves intervention on which after and before results are recorded in studied

Option B is incorrect because a developmental time-series design is the one with the same subjects are standard overtime at various intervals in order to mark their developments

Options is incorrect because a longitudinal design the same group of people studied over time, this does not include the variety in the ages of the subjects

Option d is correct option because a cross-sectional design involves studying people of different ages at the same time.