Positive and Negative Reinforcement Should the Distinction be Preserved Article

Introduction

  • Discussion of positive and negative reinforcement distinctions.

  • Michael (1975) reviewed definitions of reinforcing events categorized by whether stimuli are added (positive) or removed (negative).

  • Proposed that the distinction is confusing and should be abandoned.

Key Concepts in Reinforcement

Historical Foundations

  • Thorndike's (1911) Law of Effect: Responses leading to favorable consequences increase in frequency (reinforced).

  • Skinner's (1976, 1981) elevation of reinforcement theory to evolutionary principles.

  • Reinforcement defines operant response and accounts for adaptive and maladaptive responses.

Classifications of Reinforcement

  • Positive Reinforcement: Strengthening effect attributed to stimuli presented after a response (e.g., food for a lever press).

  • Negative Reinforcement: Strengthening occurs by removing an aversive stimulus (e.g., termination of pain).

  • Efforts over the last 50 years to classify reinforcers into positive and negative categories.

Distinct Areas of Study

  • Research involving positive reinforcement typically focuses on favorable outcomes (e.g., food presentations).

  • Negative reinforcement studies largely involve the control of behavior through aversive stimuli.

  • Some authors note similarities rather than differences in positive and negative reinforcement effects.

Traditional Bases for Distinction

Motivational Variables

  • Discussions focused on the pleasurable or satisfying nature of rewards versus the relief from discomfort in negative reinforcement contexts.

  • Avoidance training exemplifies the escape from discomfort or pain.

Definitions Executive by Behavior Analysts

  • Updated definition distinguishing positive reinforcement as increasing response likelihood through presentation and negative reinforcement as increasing it via removal.

  • Concerns about the challenges this definition poses in practice.

Michael's Objection to the Distinction

  • Emphasized that both reinforcement types depend on context, arguing their differing roles in stimulus change are unclear.

  • Suggested that positive and negative reinforcements should not be rigidly categorized but viewed as changes in environment that strengthen behaviors.

Current Teaching and Applications

  • Despite Michael's analysis advocating for the abandonment of the distinction, it remains prevalent in educational settings.

  • Textbooks continue to present positive-negative distinctions, creating possible confusions.

Ambiguities in Reinforcement Studies

  • Ambiguous cases (e.g., heat from a lamp can be positive or negative depending on context).

  • Ambiguous treatment of many reinforcers (such as food) implies both positive and negative reinforcement under different conditions.

Neuroscientific Advances

Physiological Investigations

  • Recent studies in behavioral pharmacology show minimal basis to separate reinforcement types at a pharmacological level.

  • Dopamine and its behavioral implications have been linked to both positive and negative reinforcers.

  • Lack of distinct physiological bases or response patterns underpinning reinforcement types.

Psychological and Emotional Considerations

Psychophysiological Changes

  • Studies yield inconclusive results in differentiating reinforcement feelings (e.g., pleasure vs. relief).

  • Over-reliance on subjective assessments of feelings complicates definitions.

Establishing Operations

  • Discusses how the motivation for reinforcement can shift, affecting labeling as positive or negative; severity of the problem may dictate reactions.

Summary of Arguments Against Preservation

  • Rejections of using the distinction for clarity in behavioral analysis and ethical considerations.

  • Proposes focusing on changes that reinforce or suppress behavior rather than rigid classification systems.

Future Considerations

  • Discussion on how some authors highlight potential negatives in using negative reinforcement while ignoring complexities in positive reinforcement situations.

  • Noted that change from one state to another can be explored without strict definitions.

Conclusion

  • No compelling evidence found to support retaining the positive-negative reinforcement distinction.

  • Calls for caution in future use and definitions in educational contexts, recognizing the conceptual difficulties involved.