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 would be 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 and B only
E) B and C only

Question

Quizplus · Accepted Answer

A longitudinal design involves collecting data from the same group of participants at multiple points in time. Option C describes a panel of households that provide purchasing information at specified intervals over an extended period, which fits the criteria of a longitudinal design. Options A and B do not involve collecting data from the same group of participants over time, and therefore do not fit the criteria of a longitudinal design. Option D and E are partially correct, but only option C fits the criteria completely.

Which of the Following Is an Example of a Longitudinal