Four students (ages 10-14) with moderate mental retardation learned chained tasks with constant time delay and with the system of least prompts. Both strategies produced criterion-level performance; however, constant time delay was more efficient than least prompts in terms of number of sessions, percent of errors, and direct instructional time to…

Tested effectiveness of a sequential goal-setting training program in increasing and maintaining productivity for mentally retarded individuals and whether the goal-setting program was as effective with very low developmental levels as with levels in the moderate range. Work productivity differed significantly based on level of retardation and…

The performance of two adults, one with moderate and one with severe mental retardation, in a community employment site was compared. Results indicated that both participants learned to perform the target tasks equally well though the individual with severe mental retardation required substantially more training. (DB)

The effectiveness and efficiency of stimulus fading, stimulus shaping, time delay, and a feedback only procedure were compared in teaching three adults with moderate developmental delays sight words. Results showed no clear advantage for any one procedure. The benefit of conducting a preliminary evaluation of instructional procedures during…