Multiple-Stimulus Without Replacement
Also called: MSWO, multiple stimulus without replacement preference assessment
Definition
A preference assessment in which an array of items is presented, the person selects one, the selected item is removed, and the remaining items are re-presented until all have been chosen or the person stops choosing. The order of selection gives the ranking. It is fast and is widely used to pick reinforcers before a session.
In plain language
Lay out several items, let the person pick one, take that one away, and repeat with what is left. The order they pick gives the ranking. Quick to run.
Example
Five snacks are laid out; the learner picks the crackers, which are removed, then the raisins from the remaining four, and so on.
Not multiple-stimulus without replacement
The chosen item is put back and the array is presented again. That is multiple-stimulus with replacement.
Commonly confused with
See also
Written from
- deleon-iwata-1996
Written from DeLeon and Iwata (1996). No textbook glossary consulted.
This entry has not yet been through clinical review. Treat it as a draft.