Maintenance and transfer of training by mentally retarded young adults on the Tower of Hanoi problem.

The training, maintenance, and transfer performance of mildly and moderately mentally retarded young adults on the Tower of Hanoi problem was measured in two separate experiments. Results indicated that the training method was effective to the extent that performance on trained problems was improved and these performance gains were maintained over periods of 9 and 13 weeks. Generalization to two transfer tasks was very limited, however.