The negative compatibility effect (NCE) is the surprising result that visual targets that follow a brief prime stimulus and a mask can be identified more rapidly when they are opposite rather than identical to the prime. In a recent article in this journal, S. T. Klapp and L. B. Hinkley (2002) proposed that this reflected a competition between…

This curriculum provides a sequence of activities designed to help develop cognitive and communication skills in severely and profoundly multi-handicapped individuals who are functioning between 0 and 24 months. Based on the principles that communication begins at birth and that educational programming must begin at the point where the handicapped…