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In this article the author discusses how to effectively conduct real-time field studies. He points out that these studies offer the benefit of clarifying the process of change and increasing the confidence of causal models. He discusses the practical aspects of designing and implementing real-time field studies in organizational settings. While noting that all research methods have their drawbacks, he adds that those associated with real-time field studies can be minimized by proper planning and implementation. Some of the major concerns in designing these studies are choosing the variables to be examined and most importantly, choosing the length of time between observations as well as the total amount of observations to be made.
John E. Ettlie (Fri,) studied this question.