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Results
#1. A BCBA conducted a thorough training session with a client’s direct support staff on how to implement a Differential Reinforcement of Alternative behavior (DRA) procedure to reduce a specific challenging behavior. For the first three weeks post-training, the staff consistently implemented the DRA as instructed, and data showed a positive trend. However, during a routine supervision visit six weeks later, the BCBA observed that the staff had subtly modified the procedure, now only reinforcing the absence of the challenging behavior, effectively implementing a Differential Reinforcement of Other behavior (DRO) procedure instead of DRA. The staff reported they thought DRO was ‘simpler to remember.’ This unintentional alteration of the intervention protocol over time, without explicit approval or discussion, is known as what phenomenon?
The phenomenon described in this scenario is known as procedural drift also commonly referred to as treatment drift This occurs when the way an intervention is implemented gradually changes over time from the original planned or trained protocol These changes are often unintentional subtle and can lead to a significant departure from the evidencebased practice potentially compromising the effectiveness of the intervention In this case the staffs shift from DRA to DRO even with good intentions simpler to remember is a classic example of procedural drift because its an unapproved and unmonitored alteration of the intended procedure Lets consider why other options are less appropriate Fading of prompts is a planned and systematic reduction of prompts to promote independent responding which is not what is happening here Lack of treatment integrity or procedural fidelity describes the extent to which an intervention is implemented as planned While procedural drift results in a lack of treatment integrity procedural drift specifically names the process of the intervention changing over time explaining why treatment integrity has been lost Its the cause of the lack of integrity in this context Response generalization refers to the emission of untrained responses that are functionally equivalent to the trained response in the presence of the same stimulus which is unrelated to the staffs implementation of the procedure
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