The ''Denktraining fur Kinder I'' (training of inductive reasoning) by
Klauer (1989; 1991) has experienced a great deal of attention by prac
tioners as well as by scientists. The evaluation of the efficacy of th
e training, however, is not unambiguous. To identify possible reasons
for this ambiguity, the eight studies Klauer cites as demonstrating th
e efficacy of his training are reanalyzed on methodical and methodolog
ical grounds. As a criterion for this secondary analysis and re-evalua
tion we take some steps from a scheme which has been developed by Klau
er later to evaluate trainings of the type of his ''Denktraining''. Th
e steps chosen are those that have counterparts in earlier publication
s by Klauer (1989; 1991). The results of this secondary analysis are u
nambiguous with respect to the efficacy of the training, although the
adequacy of the control groups can be questioned for each investigatio
n. But the studies do not match another aim concerning transfer which
Klauer has formulated for his ''Denktraining'', and they are inconclus
ive concerning a third aim.