EVALUATION OF COGNITIVE TRAININGS VS RESE ARCH ON TRAININGS - 2 DIFFERENT WAYS OF APPROACHING ONE PROBLEM

Klauer's defense of untrained control groups is rejected because of me thodological and ethical reasons. Also rejected are his arguments agai nst our classification scheme of different types of control groups rep resenting different types of evaluations. It is stated, however, that Klauer's arguments mostly are valid when considered from the perspecti ve of traditional research on trainings, but can be criticized from th e perspective of evaluation research. In addition, some aspects of Kla uer's use of meta-analyses in the evaluation of the efficacy of traini ng programs are criticized.