Authors
Mariana I Castillo, Michelle A Frank-Crawford1&2, Jody E Liesfeld, Trang M Doan, Eli T Newcomb, Griffin W Rooker2&4, John C Borrero
Pages
107
Description
Abstract The Multiple Stimulus Without Replacement (MSWO; DeLeon & Iwata, 1996) is commonly used to identify potential reinforcers. In this arrangement, all items are presented in an array, and the individual is prompted to “pick one.” After consuming or engaging with the item for some time the remaining items are presented in the next trial. Presumably, the item selected first is the highest preferred, and the item selected last is the least preferred. Scattered reports suggest that some individuals may save the best for last (STBFL) in an MSWO. No explicit studies of the phenomenon have been conducted so far. We aimed to determine whether individuals with intellectual and developmental disabilities STBFL in an MSWO. The stimuli ranked first and last in the MSWO were evaluated as reinforcers under progressive ratio schedules. Based on the mean break point, one of four participants STBFL in the MSWO. Results were consistent for edibles and toys.
Scholar articles
MI Castillo, MA Frank-Crawford1&2, JE Liesfeld…