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Ep. 23- JABA in One Take- Understanding different topographies of expulsion

Dec 08, 2021

JABA in One Take- Show Notes


Behavioral feeding continues to impress me with the specificity that they are able to acquire when working with their topography of problem behavior. This article goes over expulsions, which is a common side effect from behavioral feeding treatments and is seen to be in the same response class (a group of responses with the same reinforcer) as inappropriate mealtime behavior. What may happen during a behavioral feeding treatment is first, the identification of refusal behavior maintained by escape. Then, a treatment involving nonremoval of the spoon, or escape extinction. Once the food goes into the mouth, the child may expel to continue to escape the bite. Following treatment of expulsion (chin prompt + representation), the child may pack (hold in the side of cheek) the bite. This set of behavior topographies is common, but still difficult to deal with. These authors focused on the expulsions and attempted to delineate between the different types of expulsions seen in children. By using a clever alternating treatment combined with a reversal, the authors were able to provide us with a preliminary explanation of some of the moderating variables present when working with expulsions. 

Citation + DOI

Ibañez, V. F., Peters, K. P., &Vollmer, T. R. (2021), A comparison of re-presentation and modified chin prompt to treat different topographies of liquid expulsion. Journal of Applied Behavior Analysis, 54(4), 1586-1607.

Additional Readings:

Wilkins, J. W., Piazza, C. C., Groff, R. A., & Vaz, P. C. M. (2011). Chin prompt plus representation as treatment for expulsion in children with feeding disorders. Journal of Applied Behavior Analysis, 44(3), 513-522. jaba.2011.44-513

Shalev, R. A., Milnes, S. M., Piazza, C. C., & Kozisek, J. M. (2018). Treating liquid expulsion in children with feeding disorders. Journal of Applied Behavior Analysis, 51(1), 70-79. 1002/jaba.425


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