Differential reinforcement and extinction procedure

Module Overview

  • Topic: Differential Reinforcement and Extinction Procedures
  • Importance: These procedures are pivotal within Applied Behavior Analysis (ABA).
  • Role of Registered Behavior Technicians (RBTs): To aid individuals in learning new skills, replacing challenging behaviors, and supporting various functioning needs.
  • Necessity of Procedures: Understanding the application of differential reinforcement and extinction is vital for effectiveness, ethics, and safety.
  • Influencing Factors: Supervisor guidance, ethical considerations, individual learner characteristics, and environmental setting dictate the application of these procedures.

Content Breakdown

Section 1: Foundations of Reinforcement

  • Definition of Reinforcement:
    • A process that increases the likelihood of a behavior occurring again.
    • Involves adding or removing something in the environment following a behavior.
  • Key Concept: Reinforcement is not synonymous with rewards; it focuses on what is effective for the learner.
    • ABA Definition: Reinforcement occurs if behavior increases; if not, it hasn't occurred.
Types of Reinforcement
  • Positive Reinforcement:
    • Example: A learner requests help with a task using a picture card. The technician provides immediate assistance and praise, leading to increased requests for help over time.
  • Negative Reinforcement:
    • Example: A learner appropriately says "break, please" when overwhelmed, resulting in a break from tasks. This increases the use of the phrase over time.
    • Important Note: Negative reinforcement can also inadvertently reinforce undesired behaviors (e.g., screaming leads to task removal).
Common Misperceptions
  • Negative reinforcement does not mean introducing something unpleasant or punishment.
  • Reinforcement should cater to individual preferences, which vary widely between learners.
  • Misinterpretation between reinforcement and rewards may lead to incorrect assumptions about behavior change.

Section 2: Assent and Dignity

  • Definition of Assent:
    • The willingness of a learner to participate, indicated by verbal and non-verbal cues.
  • Importance of Respecting Assent:
    • Ignoring descent (refusal) can damage trust and hinder learning.
  • Ethical Considerations:
    • Monitor emotional states during interventions and ensure dignity is preserved.

Section 3: Differential Overview

  • Definition:
    • Differential reinforcement reinforces one behavior while withholding reinforcement for another, assisting in replacing challenging behaviors with appropriate ones.
  • Types of Differential Reinforcement:
    • DRO (Differential Reinforcement of Other Behavior):
    • Reinforces any behavior other than the target problem behavior.
    • DRA (Differential Reinforcement of Alternative Behavior):
    • Reinforces a specific alternative behavior that serves the same function as the problem behavior.
    • DRI (Differential Reinforcement of Incompatible Behavior):
    • Reinforces behaviors that are incompatible with the problem behavior.
    • DRL (Differential Reinforcement of Low Rates of Behavior):
    • Reinforces a behavior only when it occurs less frequently than a specific criterion.

Section 4: Implementing Differential Reinforcement Procedures

4.1 Implementing DRO
  1. Identify target behavior.
  2. Select time intervals for observation.
  3. Deliver positive reinforcement immediately after successful intervals.
  4. Reset timer if target behavior occurs.
  5. Gradually increase the time intervals based on success.
  6. Fade reinforcement over time.
4.2 Implementing DRA
  1. Identify the behavior’s function.
  2. Select an appropriate alternative behavior.
  3. Teach the alternative behavior clearly.
  4. Reinforce the alternative behavior immediately.
  5. Withhold reinforcement for problem behavior.
  6. Monitor data for improvements.
4.3 Implementing DRI
  1. Identify an incompatible behavior.
  2. Teach and model the incompatible behavior.
  3. Reinforce the incompatible behavior immediately.
  4. Stay neutral when the problem behavior occurs.
  5. Increase the expectation for maintaining the incompatible behavior over time.
4.4 Implementing DRL
  1. Collect baseline data on behavior frequency.
  2. Set a lower target frequency for reinforcement.
  3. Measure time periods for behavior occurrence.
  4. Reinforce when behavior meets the goal.
  5. Gradually lower the frequency requirement.

Section 5: Extinction Procedures

  • Definition of Extinction:
    • Occurs when a previously reinforced behavior no longer yields reinforcement, leading to decreased behavior.
  • Key Points:
    • Only behaviors that have been maintained by reinforcement are suitable for extinction.
    • Extinction often results in an extinction burst.
  • Implementation Steps:
    1. Identify the reinforcer maintaining the behavior through functional assessment.
    2. Withhold that reinforcement when the problem behavior occurs.
    3. Reinforce appropriate or replacement behaviors.
    4. Expect and remain consistent during extinction bursts.
    5. Collect accurate data to track behavior changes.

Section 6: Preference Assessments

  • Purpose: To determine individual preferences for items or reinforcers.
  • Importance: Effective reinforcement depends on the learner valuing the items received.
  • Types of Assessments include:
    • Interviews or surveys.
    • Free operant observations.
    • Trial-based preference assessments (paired choice, multiple stimulus).
  • Implementation Steps:
    1. Prepare a list of possible reinforcers.
    2. Choose the type of assessment appropriate for the learner.
    3. Explain expectations for the assessment.
    4. Observe and record selections.
    5. Rank results to determine top preferred items.

Section 7: Monitoring Effectiveness

  • Role of RBTs in Data Collection:
    • Essential for determining if interventions are working.
  • Responsibilities include:
    • Implementing the plan accurately.
    • Collecting objective data consistently.
    • Reporting progress and concerns to supervisors.
  • Methods to Ensure Accurate Data:
    • Use specific definitions for behaviors.
    • Collect data immediately to maintain accuracy.

Section 8: Ethical Communication and Collaboration

  • Principles:
    • Protect learner dignity and transparency in communication.
    • Maintain professional boundaries and respect autonomy.
  • Regular Communication: Share data and progress with supervisors frequently.
  • Ethical Practice: Adhere to BACB ethics during interventions.

Section 9: Practical Examples and Scenarios

  • Scenario Examples Illustrating Differential Reinforcement Types:
    • DRO: Maya receives reinforcement for quiet behavior during art.
    • DRA plus Extinction: Leo learns to request breaks appropriately, reinforcing new communication behavior.
    • DRI: Priya holds a toy bin to prevent throwing toys at peers.
    • DRL: Charlie raises hands fewer times during class for recognition.

Section 10: Closing Summary

  • Reinforcement is key in behavior change, whether positive or negative.
  • Differential reinforcement teaches behaviors while extinction removes reinforcement of undesired behaviors.
  • Upholding dignity and ethics is essential in all procedures, supported by data-driven decision making and regular communication with supervisors.
  • Reinforcement strategies should evolve towards more natural support systems over time, promoting independence for learners.