A Multiple StimulusStimulus is defined as any change in the environment or... with Replacement (MSW) Preference Assessment is a technique used in AppliedApplied means that the behaviors targeted for change in... BehaviorBehavior refers to any activity or action that living o... Analysis (ABA) to identify preferred items or activities by presenting an array of stimuli (typically 3-7 items) at once and allowing the individual to choose one. After the individual selects an item, the chosen item is replaced back into the array, while the other items remain the same or are replaced with new ones. This process is repeated across multiple trials to establish a hierarchy of preferences based on how frequently each item is selected.
Example
A behavior analyst is working with a child named Jack, who enjoys a variety of toys. To identify Jack’s most preferred items for use in therapy, the analyst conducts an MSW preference assessment. The analyst selects five items: a toy car, a puzzle, a small ball, a cookie, and a fidget spinner. These items are placed in front of Jack, and he is asked to choose one. Jack selects the cookie. The analyst records this choiceIn Applied Behavior Analysis (ABA), choice refers to providi... and then places the cookie back in the array, ensuring that all five items are still available. On the next trial, Jack selects the toy car. The process continues for 10 trials, with Jack choosing the cookie five times, the toy car three times, and the puzzle twice, while the ball and fidget spinner are never selected. The analyst concludes that the cookie is Jack’s most preferred item, followed by the toy car, which can now be used as effectiveEffective refers to one of the seven dimensions of ... reinforcers during therapy sessions.