In the video above, the instructor is conducting a multiple stimulus without replacement (MSWO) preference assessment with toys. MSWOs allow you to determine a child’s preference hierarchy from a select group of items. Sometimes (but not always), a child’s highest-preferred items can be used to reinforce his or her appropriate behaviors. MSWOs are most appropriate for children who will consistently scan a large array of items and make a consistent choice based on relative preference. An MSWO should not be used if a child is likely to engage in problem behavior when toys are removed. Typically, preference assessments with toys and with edibles are conducted separately.
For more information regarding MSWO preference assessments and to download free data collection sheets, visit http://vkc.mc.vanderbilt.edu/ebip/multiple-stimulus-without-replacement/