Eight students (ages 9-12) with mild mental retardation were instructed in sight-word reading in 2 small groups. Results showed that the time delay procedure was effective, that students learned other students' words through observation, and that students learned some incidental information. (Author/JDD)

Two dyads of students (ages 10-12) with moderate mental retardation were taught domestic and vocational chained tasks, with each student of each dyad being taught just a part of the task. Results indicated that constant time delay was effective, and all students learned a substantial amount of their partners' tasks through observation. (Author/JDD)

Three fifth grade students with learning disabilities were taught to recognize multisyllabic basal vocabulary words using constant time delay in a small-group instructional arrangement and were assessed on ability to recognize, spell, and define both their own target words and observational words. The procedure was effective in establishing…

Effects of constant time delay in teaching sight word reading to four disabled preschoolers were evaluated. The method was reliably implemented in a group setting, effectively taught all targeted stimuli in near-errorless fashion, promoted observational learning across students, and resulted in greater expressive labeling and receptive…

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)