The Effects of Mastery Criteria on Maintenance: A Replication With Most-to-Least Prompting.

Previous research has suggested that skills taught with a least-to-most prompting procedure to 80% and 90% accuracy did not always maintain high levels of performance maintenance. The present study replicates and extends previous research by evaluating the effects of various mastery criteria (i.e., 80%, 90%, and 100% accuracy across three consecutive sessions) on the maintenance of tacting skills taught with a most-to-least prompting procedure combined with a progressive time delay. Results of this study support previous research and further demonstrate that the highest levels of maintenance are achieved with 100% and 90% accuracy criteria for up to a month. For the 80% criterion, performance deteriorated during follow-up probes. Contrary to previous research suggesting a 90% criterion combined with least-to-most prompting procedures was not always sufficient for producing skill maintenance, the current study may provide preliminary support for the use of a 90% accuracy mastery criterion when combined with a most-to-least prompting procedure with a progressive time delay. © Association for Behavior Analysis International 2021.