REEVALUATING SOME EVALUATIONS OF A TRAINI NG OF INDUCTIVE REASONING -ANSWERS AND NEW RESULTS

Hager, Hasselhorn & Elsner (1995) examine the empirical evidence avail able until 1991 concerning the effectivity of a program aimed at foste ring inductive reasoning. Irrespective of some minor points, different views are to be stated particularly concerning the question of the ap propriate control group and, closely related to it, concerning the que stion of how to optimally estimate the effect size of a training progr am. These differences are discussed using new data and meta-analytic s yntheses so that new solutions for research in training processes can be proposed.