This study addressed the problem of promoting generalization of knowledge in people with mental handicaps, by presenting an approach based on the idea that certain cognitive representations of strategies and related concepts are common to solving a wide variety of problems. The surface context of these problems may vary considerably, but all will…

A constant time delay procedure was used to teach four adolescents with moderate mental retardation to select lower priced grocery items using an adaptive number line. Students reached criterion, maintained the skill up to 14 weeks after training, and generalized the skill from the classroom to a community grocery store. (Author/DB)

Junior high school students (N=104) were given instruction using programed booklets on modular addition. Twelve conditions of verbal mediation were randomly assigned to students. Conditions were defined by presence or absence of introductory discussion (2 levels), number of worked examples (2 levels), and type of rule (3 levels: specific, general,…