Mass Media Research: An Introduction - 9th Edition
Roger D. Wimmer & Joseph R. Dominick

Chapter 8 - Longitudinal Research

  1. Sample mortality is always a problem in longitudinal research.  Find examples of longitudinal research published in scholarly journals or in the trade press.  Try to estimate the average mortality for various time periods.  For example, on the average, longitudinal studies lose what percentage of their sample over six months?  Over a year?

  2. One of the problems with a retrospective panel is that people have faulty memories.  What methods might be included in a a retrospective panel to overcome this problem?

  3. How might a longitudinal study be used to analyze the programs adults watch on TV?

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