A researcher decides to investigate whether there are any significant changes in personality from early adulthood through late adulthood. The researcher begins with a sample of 21-year-olds and plans to follow this group until they are 80 years old. The type of research design is
A) cross-sectional.
B) longitudinal.
C) time-lag.
D) sequential.

Question

Quizplus · Accepted Answer

The research design described in the scenario is longitudinal because the researcher plans to study the same group of individuals over an extended period of time, in this case from age 21 to age 80. Cross-sectional research involves comparing different age groups at the same point in time, while time-lag and sequential designs involve a combination of cross-sectional and longitudinal approaches.

A Researcher Decides to Investigate Whether There Are Any Significant