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A-B-A design

experiment entailing on reversal (Baseline-treatment-baseline)


A-B-A-B design

most straightforward and powerful within subject design (Baseline-treatment-baseline- treatment)


B-A-B design

begins with the application of the independent variable (treatment) after stable rates, return to baseline, if bx worsens, treatment is reintroduced


multiple treatment reversal design

experiments that use the reversal design to compare the effects to 2 or more experimental conditions to baseline and/or to one another


sequencing effects

effects of a subjects BX in a given condition that are a result of the subjects experience with a prior condition


NCR reversal design

deliver NCR on a fixed or variable time schedule independent of the subjects BX


DRO reversal design

control condition consists of delivering the event suspected of functioning as reinforcement following the emission of any BX other that then target BX.


DRI/DRA reversal

control condition- occurrence of a specified BX that is either incompatible or alternative BX to the target BX are immediately followed by the same consequence previously delivered as contingent reinforcement for the target BX



a level of BX observed in earlier phase cannot be reproduced even though the experimental conditions are the same as they were during an earlier phase


alternating treatments design

rapid alternation of 2 or more distinct treatments (IV) while there effects on the target behavior are measured.
-do not need stable baseline
-manipulated independent of responding


multiple treatment interference

the confounding effects of 1 treatment on the subjects BX being influenced by the effects of another treatment administered in the same study.