[Training in thinking for beginning students: a new approach to cognitive development].

Modern cognitive psychology uses training methods not only as research methods but also as means for cognitive fostering. This article deals with a new experimentally tested theory on inductive thinking and an training program based upon that theory. The program has been tried out several times. The results of four training experiments are reported. They show constantly high effect sizes lasting at last over several months. The program is applicable for normal children of age 5-7 as well as for older retardates or younger bright children.