On the effects of training inductive reasoning: How far does it transfer and how long do the effects persist?

Using the same program, two training experiments have been conducted in a Dutch and in a German elementary school. The common expectation was that training in inductive reasoning would transfer both on intelligence tests measuring inductive reasoning and on math performance. Furthermore, it was expected that the training effects would persist for at least some months after training had ended. In experiment I (N=34), a rather short training period turned out to be effective with respect to the intelligence test performance but not with respect to math performance. In experiment 2 (N=23), the amount of training in inductive reasoning was systematically varied. It could be shown that transfer on intelligence test as well as on math performance was linearly dependent on the amount of prior training. The training effects were found to persist between four and nine months after training.