DeLeon & Iwata (1996)
How many participants were there in Experiment 1?
7
In Experiment 1, there were ____ (#) items per participant ~Items were arbitrarily selected
7
Experiment 1: Procedures ~MSW: Selection: Item ______ at _____ ____ , items rotated No Selection: ____ ____, record as "not selected"
reintroduced; next trial; end trial
Experiment 1: Procedures ~MSWO: Selection: ____ _____, items were rotated No Selection: ____ ____ , record as " ____ ____"
remove item; end trial; not selected
The purpose of Experiment 2 was to
verify prediction about stimuli that were never selected in the MS procedure
Experiment 1: Procedures ~PS - If the participant selected an item, then they had _________ selected ~ If the participant did not select an item, then one would ________ & start next trial
access to the item; end the trial
In Experiment 2, results showed that
items never selected during MS procedure produced increases in responding
Experiment 2: Reinforcement Effects 1. 2. 3.
1. Arrange a schedule of contingent delivery for four of items 2. Failure increase rates of responding over BL levels; MSWO and PS more prone of false positives than MS 3. Increase in responding; items can function as reinforcers; MS more prone to false negatives
(The purpose of this study was to compare three preference methods (List them):
1. Paired stimulus 2. Multiple stimulus with replacement 3. Multiple stimulus without replacement
Experiment 2: Reinforcement Effects 1. Arrange a schedule of _____ delivery for ____ of items 2. Failure increase rates of ____ over BL levels; ____ & ____ more prone of ____ ____ than MS 3. _____ in responding; items can function as _____; _____ more prone to _____ _____
1. contingent; four 2. responding; MSWO; PS; false positives 3. Increase; reinforcers; MS; false negatives
Experiment 1: Results 1. All three assessment methods identified the ____ ____for ____ of the 7 participants 2. ____________ - Matched ranked items with PS 3. _____ -Matched ranked items with PS
1. same reinforcer; 4 2. MSWO 3. MS