1. Richard J. Piotrowski and Don J. Siegl are with the Exceptional Children's Progmm of the Allegheny Iniermediate Unii in Pittsburgh, Pennsylvania. Address: Richard J . Piorrowski, PhD. and Don J. Siegel. PhD, Exceptional Children's Program, Allegheny Intermediate Unii, 200 Commerce Court Building, Pittsburgh. PA 15219-1178.
2. Richard J. Piotrowski and Don J. Siegl are with the Exceptional Children's Progmm of the Allegheny Iniermediate Unii in Pittsburgh, Pennsylvania.