Reconsidering Training Evaluation: Heterogeneity of Variance as a Training Effect
There are at least two other important ways to consider the effectiveness of training. One alternative is the analysis of individual change over a long period of time. In this approach, the group of trainees as a whole is often not of essential interest. Rather, the attempt to model individual “growth” curves is central (Rogosa, 1988; Rogosa, Brandt, &Zimowski, 1982; Willet, 1988). This litera ture most appropriately addresses long-term training (perhaps better called education) j when a many occasion measurement plan is both appropriate and feasible. When a typical organizational training evaluation is considered, how ever, a second alternative way to address the question of training effectiveness becomes attractive. This approach would consider the effect of training on between-person variability-the focus of this chapter.