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ABACLive Cambridge Center Series Presents: Dr. Ron Allen: Adjunctive Behavior and the Dynamics of Excess


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Event Information

We Are Excited for the October 2021

ABACLive Cambridge Center Series Webinar Presented By

Ron Allen Ph.D., BCBA-D, LABA

Thursday, October 14, 2021 |Time: 5:00 pm - 8:00 pm eastern (New York)

Recording closes 10/24/21 at 11:59 pm eastern (New York)  | You must register prior to the LIVE event to have access to the recording. Recording closes 10 days after the LIVE webinar.

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During intermittent reinforcement schedules maintaining a specified response, other behaviors neither shaped by nor directly maintained by the scheduled reinforcers emerge. These behaviors have been termed schedule-induced, interim, or adjunctive (e.g., Falk, 1971; Staddon, 1977) and include activities such as aggression, polydipsia, escape, and others. Adjunctive behaviors are typically restricted to the immediate post-reinforcement period, are sensitive to the deprivation conditions related to the reinforcer for the specific response, are a function of the reinforcer rate (or inter-reinforcement interval) for the specific response, and are excessive in nature. Finally, adjunctive phenomena show broad generality occurring across a variety of species (including humans) and a variety of intermittent schedule contexts. The current presentation will detail major findings from the research on adjunctive behavior (from 1961 to the present), as well as compare the major theoretical conceptualizations regarding their etiology and function. Additionally, arguments will be made against rate of response as a measurement strategy for adjunctive behavior. Finally, it will be argued that the induction process has important implications for assessing and managing challenging behavior in humans and that the conceptual focus for the study of the induction process should be modulation of motivation rather than the particular typographies of behaviors we observe.

Target Audience: Professionals for whom the topic is within their scope of practice. We welcome students and others who are also interested in the topic to join us.


By the end of this event participants should be able to:

  • Identify the definition of adjunctive behavior.
  • Select three characteristics of adjunctive behavior.
  • Identify the pros and cons of the use of rate of response in the measurement of adjunctive behavior.
  • Select assessment strategies discussed for adjunctive aspects of challenging behavior in the clinical setting.


Ron Allen, Ph.D., BCBA-D, LABA  received his doctorate over thirty years ago from the University of Florida (Go Gators). Ron has worked both in the areas of the Experimental Analysis of Behavior and Applied Behavior Analysis. In the latter capacity he has directed three residential schools for adolescents with behavior disorders, including most recently serving for 18 years as the Director of the Ivy Street School for adolescents with brain injury. Currently he is an Associate Professor of Practice and Director of the Doctoral Program in the Department of Behavior Analysis at Simmons University. He is also the Director of Behavioral Treatment Services for Riverside Community Care supporting adult individuals with developmental disabilities and behavioral challenges. His research interests include brain injury, the management of negatively reinforced challenging behavior, adjunctive behavior, derived stimulus relations, conditioned reinforcement, and the philosophy of Behaviorism. He is a Board Certified Behavior Analyst (BCBA-D) and is licensed as an Applied Behavior Analyst in Massachusetts (LABA). He serves on the Board of Directors of the Cambridge Center for Behavioral Studies, as well as other boards and committees. 


Our speaker are volunteering their time to present as part of the  Cambridge Center Series and will not receive a speaker fees for presenting this event. 50% of the proceeds from this event are donated to The Cambridge Center for Behavioral Studies


    • Behavior Analysts earn 3 CEUs (Learning): LIVE & RECORDING
    • Not eligible for NBCC, APA, AOTA, or ASWB credit hours. You may download a certificate of attendance if your profession is not represented.

Additional Information

  • You must attend the entire event to receive credit.
  • Must submit all attendance codes and pass the post-test (see Expected Learning Outcomes).
  • Webinar/Workshop Portal closes 1 month after live event. You must download handouts and complete attendance verification and post-test within that time frame.
  • For ABAC's continuing education approvals statements please view our Continuing Education page.


After attending this event, attendees will select the correct answer on 80% of the questions within 3 attempts of the post-test that assesses the 4 learning objectives for this 3 hour event.


5:00 pm: Introduction
5:05 pm: Webinar begins
6:30 pm: 10 minute break
6:40 pm: First Q&A session
6:50 pm: Webinar resumes
7:45 pm: Second Q&A session
8:00 pm: Evaluation, post-test and code submission forms