Efficiency was compared between three procedures for sequencing examples with minimal stimulus variation between adjacent positive and negative examples: dynamic, static, and static with maximal differences between pairs. For young children, increasing relevant feature saliency and altering a single stimulus to generate examples reduced training…

A sequence of studies compared two types of discrimination formation: errorless learning and trial-and-error procedures. The subjects were three boys and five girls from a university preschool. The children performed the experimental tasks at a typical match-to-sample apparatus with one sample window above and four match (response) windows below.…

This review of 20 years of literature on sight word instruction for individuals with handicaps examines effectiveness data for procedures teaching word recognition and comprehension. Covered are "errorless procedures," prompt elimination, stimulus fading, time delay, easy to hard discrimination, and trial and error with feedback. Two tables…