A researcher has 10 subjects with Down syndrome. All of the subjects are 3 months old, and the researcher is planning to observe these subjects for four consecutive years. What type of research method is being used?
A) Cross-sectional method
B) Longitudinal method
C) Mixed-longitudinal method
D) Mixed-sectional method
E) Cross-cultural method

Question

Quizplus · Accepted Answer

The longitudinal method involves observing the same subjects over an extended period of time, which is what the researcher is planning to do by observing the subjects for four consecutive years.

A Researcher Has 10 Subjects with Down Syndrome