This study, involving four secondary-age students with moderate to severe mental retardation, found that four response prompting conditions (progressive time delay and the system of least prompts, both with and without a descriptive consequent event) were effective in teaching reading of recipe words with similar efficiency and maintenance. (JDD)

Constant time delay was found to be an effective strategy in teaching targeted facts to four secondary-age students with mild and moderate mental retardation. Students also learned other students' target facts through observation and learned incidental information embedded in the consequent event following correct responding. (Author/JDD)

This study found that constant time delay was effective in teaching word reading to four students (ages seven to eight) with mild handicaps. Individual attentional response was more effective and efficient in learning to spell words than in choral attentional response. Observational and incidental learning occurred for all students. (Author/JDD)