Behavioural Approach to Explaining Phobias: Two-process Model
Negative Reinforcement: Maintenance occurs through operant conditioning when an individual avoids the phobic stimulus. This avoidance results in the removal of an unpleasant state (anxiety), which acts as a reward and reinforces the avoidance behavior.
The Avoidance Loop: Because the individual successfully avoids the stimulus, they never experience the stimulus without the feared consequence. This prevents the process of extinction, where the person would otherwise learn that the stimulus is actually harmless.
Anxiety Reduction: The immediate relief felt upon escaping or avoiding the phobic object is the primary driver of the phobia's longevity. This explains why phobias can last a lifetime even if the original traumatic event is never repeated.
| Feature | Classical Conditioning (Acquisition) | Operant Conditioning (Maintenance) |
|---|---|---|
| Primary Mechanism | Association between two stimuli | Consequences of a behavior |
| Role of the Individual | Passive (response is elicited) | Active (behavior is emitted to avoid) |
| Key Outcome | Creation of a new fear response | Prevention of fear extinction |
| Timing | Occurs at the onset of the phobia | Occurs continuously over time |
Reinforcement vs. Association: It is vital to distinguish that while association creates the fear, reinforcement (specifically negative reinforcement) is what makes the fear 'stick' and resist change.
Extinction: In classical conditioning, extinction happens when the CS is presented without the UCS; however, operant avoidance makes this presentation impossible, thus blocking extinction.
Identify Both Stages: When asked to explain the behavioral approach, you must explicitly mention both classical and operant conditioning. Marks are often lost by focusing only on how the fear started while ignoring how it is maintained.
Use Precise Terminology: Always use the term negative reinforcement rather than just 'reinforcement'. Be prepared to explain that 'negative' refers to the removal of anxiety, not a 'bad' consequence.
Link to Therapy: Remember that this model is the foundation for behavioral therapies like systematic desensitization. If the phobia is maintained by avoidance, the cure must involve preventing avoidance (exposure).
Reinforcement vs. Punishment: A common error is confusing negative reinforcement with punishment. Punishment decreases a behavior, while negative reinforcement increases avoidance behavior by removing the 'punishing' feeling of anxiety.
The 'Trauma' Assumption: Students often assume every phobia must start with a massive trauma. While the model allows for this, it also accounts for subtle associations or even social learning (though the latter is a separate behavioral extension).
Ignoring Cognitive Factors: Do not forget that a major critique of this model is its failure to account for thinking. In exams, mentioning that the model ignores 'irrational beliefs' can provide a sophisticated evaluative point.
Biological Preparedness: This concept challenges the Two-process model by suggesting we are evolutionarily predisposed to fear certain things (like snakes or heights) more easily than others (like cars or toasters).
Cognitive Limitations: The model struggles to explain why some people have phobias without any memory of a conditioning event. This suggests that cognitive appraisals or vicarious learning might play a role that the strict behavioral model misses.
Treatment Application: The success of exposure-based therapies provides strong empirical support for the maintenance aspect of the model. By forcing the individual to remain in the presence of the CS, the avoidance loop is broken, allowing extinction to occur.