This study examined the matching and sequencing of quantities, numerals, and arbitrary forms by two individuals with mental retardation. Results showed that sequence training did not readily lead to new matching performances, unlike prior research with college students. Instead, training in matching to sample yielded emergent sequence production…

This study evaluated the Task Demonstration Model for teaching discrimination skills with three teachers and their students (adolescents and young adults with moderate to severe mental retardation). The intervention required students to respond simultaneously. Students increased their percentage and rate of correct responding as well as their…