Which of the following is an example of a longitudinal design in a descriptive research project?
A)surveys involving 600 mall intercepts in six major cities to determine the likes and dislikes of health food
B)a variety of promotional offers displayed in stores, with each group of respondents seeing only one offer and the resulting brand sales would be monitored.
C)a panel that consists of households that provide purchasing information at specified intervals over an extended period
D)a cross-sectional study of the elderly held once at the end of the fiscal year
E)all of the above

Question

Quizplus · Accepted Answer

A longitudinal design involves collecting data from the same group of individuals over an extended period of time. The panel of households providing purchasing information at specified intervals over an extended period exemplifies a longitudinal design. The other options (A, B, D) involve cross-sectional studies, where data is collected at one point in time from different groups of individuals or situations.

Which of the Following Is an Example of a Longitudinal