ABA glossary
Positive punishment
Definition
A response is followed by the presentation of a stimulus, or an increase in its intensity, and similar responses occur less often in the future.
In plain words
"Positive" means something is added, not that it is good. In positive punishment, a stimulus appears after the behavior, such as a reprimand, required effort, or an unpleasant sensation, and the behavior decreases. Like all punishment, it is defined by its effect: a reprimand that is followed by more of the behavior is reinforcement, not punishment. In ABA practice, positive punishment procedures are considered only when reinforcement-based approaches have not been enough, and only as designed and supervised by a qualified supervisor, such as a BCBA.
Example from a session
Jada's plan includes a brief verbal reprimand ("No throwing") after she throws materials, combined with rich reinforcement for handing items over. The RBT delivers the reprimand exactly as written, in a neutral voice, and records each throw. Over two weeks throwing decreases. If throwing had increased after reprimands, the reprimand would have been functioning as reinforcement (attention), and the RBT's data would show the BCBA that the plan needs to change.
For BCBA candidates and supervisors
Procedures such as reprimands, response blocking, and overcorrection can function as positive punishment. Analysts consider them only after reinforcement-based and less restrictive options, obtain informed consent, follow agency and legal rules, combine them with reinforcement for alternative behavior, and monitor side effects: emotional responding, aggression, escape and avoidance of the person delivering it, behavioral contrast, and imitation of punishing behavior. Effective use requires immediacy, consistency, and adequate initial intensity, rather than gradually escalating intensity, which can lead to habituation.
Often confused with negative reinforcement, negative punishment
Positive punishment adds a stimulus and the behavior decreases. Negative reinforcement removes a stimulus and the behavior increases; it is often mistaken for punishment because "negative" sounds bad. Negative punishment removes a preferred stimulus and the behavior decreases. Decide the direction of the behavior first, then whether something was added or removed.
Exam tip
Behavior goes down and something was added: positive punishment. Expect distractors that label any unpleasant event as punishment, even when the behavior increased afterward.
Can you spot positive punishment in a scenario?
Practice BCBA B.5 with exam-style questions and instant feedback.