Several Medical Studies Have Established a Link Between Television Watching

Multiple Choice

Several medical studies have established a link between television watching and obesity, due not only to the inactivity and the snacking that often goes with it, but also to the incitement to consume sugar sweetened foods and soft drinks." (Dagnaud, 2003) . Another researcher wants to know whether 10-year-olds, 12-year-olds, or 14-year-olds are most likely to respond to a new advertising approach for Fruit Loops cereal. Which of the following research designs will provide the most useful results?

A) Sequential
B) Cross-sectional
C) Longitudinal
D) Pretest-posttest experimental