A researcher wishes to study developmental changes in people’s preference for action movies. The researcher locates 50 people at each of the following ages: 15, 20, 25, 30, 35, 40, 45, and 50 years. She asks them to rate their preference for action movies in relation to other sorts of movies. This is an example of which type of design?

a.longitudinal

b.nested

c.cross-sectional

d.panel

Answer:

a. Longitudinal design involves the same variables are repeatedly observed over a long period of time(decades). Here the study is not for long period of time.

b. Nested design uses hierarichical sampling .Here we are not using hierarchical data.

c. Cross-Sectional design involves observational study that analyzes data collected from a population at a specific point in time. Here in the question the study is for people's preference for action movies n number of observations for a particular year . So the design should be Cross-Sectional.

d. Panel design involves observational study that analyze data on different dates for multiple subjects. But our subject is only one ie people's preference for action movies.

Correct Answer

c. cross-sectional