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Behavioural Explanations of Phobias

The Behavioural Approach

Core Principles

The behavioural approach views phobias as learned behaviours. It emphasises the role of the environment and experience in developing and maintaining phobic responses. This approach can be divided into explanations (how phobias are acquired and maintained) and treatments based on learning principles.

The Two-Process Model (Mowrer, 1960)

Mowrer's model proposes that phobias develop through two distinct learning processes:

1

Classical Conditioning

Explains the acquisition (how the fear starts).
2

Operant Conditioning

Explains the maintenance (how the fear continues).

Classical Conditioning (Acquisition)

The process where a neutral stimulus becomes associated with a fearful event, triggering a conditioned response.

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NS / UCS

A neutral stimulus (NS), such as a dog, becomes associated with a fearful event (unconditioned stimulus, UCS), such as being bitten.
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UCR

The fearful event causes an unconditioned fear response (UCR).
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CS / CR

After repeated pairings, the NS alone (now a conditioned stimulus, CS) triggers a conditioned fear response (CR).
CASE

Example

If a child is bitten by a dog (UCS), they learn to fear dogs (CS).

Operant Conditioning (Maintenance)

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The Role of Negative Reinforcement: Avoidance behaviour reduces anxiety caused by the phobic stimulus, which acts as negative reinforcement.

This reinforces the avoidance behaviour because avoiding the phobic object removes the unpleasant anxiety, making it more likely to be repeated. Example: Avoiding dogs reduces anxiety, so the fear is maintained.

Systematic Desensitisation: Key Components

SD is a behavioural therapy based on classical conditioning principles, aimed at replacing the phobic response with a relaxation response (reciprocal inhibition).

1

Relaxation Training

The person learns relaxation techniques like deep breathing or progressive muscle relaxation to counteract anxiety.
2

Anxiety Hierarchy

A list of feared situations arranged from least to most anxiety provoking.
3

Gradual Exposure

The patient is gradually exposed to phobic stimuli while maintaining relaxation.

SD Process Steps

The therapeutic process follows a clear structure to ensure fear is unlearned gradually.

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Step 1

Therapist teaches relaxation techniques.
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Step 2

Patient and therapist create an anxiety hierarchy.
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Step 3

The patient imagines or encounters each step while staying relaxed.
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Step 4

Once relaxed at a lower step, they move to the next level.

How Flooding Works

Flooding therapy involves immediate and intense exposure to the most feared stimulus without any gradual build-up or avoidance allowed.

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But wouldn't the intense exposure make the patient run away?
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No avoidance is possible, which means operant conditioning cannot reinforce the phobia. The patient is exposed until the anxiety subsides (habituation).
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This prolonged exposure eventually leads to extinction of the conditioned fear response because the anticipated harm does not happen, breaking the association.

Comparing Behavioural Treatments

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Systematic Desensitisation AdvantagesEffective for a range of phobias; evidence shows high success rates. Less traumatic and more ethical than flooding. Can be done in vivo (real exposure) or in vitro (imagined exposure).
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Flooding DisadvantagesVery distressing; some patients may drop out. Less suitable for complex phobias or PTSD.

Behavioural Summary

Key Takeaway

The behavioural approach explains phobias as learned through classical conditioning and maintained through operant conditioning (avoidance). Systematic desensitisation uses gradual exposure paired with relaxation to replace fear. Flooding uses immediate exposure to eliminate the phobic response through extinction.
Behavioural Approach to Phobias
Question
Behavioural Approach Focus

What does the behavioural approach to phobias emphasize?

Answer
Key Point

The role of environment and experience in developing and maintaining phobic responses.

Question
Mowrer's Model Processes

What are the two processes in Mowrer’s two-process model of phobias?

Answer
Processes

Classical conditioning (acquisition) and operant conditioning (maintenance).

Question
Classical Conditioning Explanation

How does classical conditioning explain phobia acquisition?

Answer
Explanation

A neutral stimulus becomes associated with a fearful unconditioned stimulus, eventually triggering a conditioned fear response.

Question
Role of Operant Conditioning

What role does operant conditioning play in phobias?

Answer
Role

Avoidance behaviour reduces anxiety, acting as negative reinforcement that maintains the phobia.

Question
Systematic Desensitisation

What is systematic desensitisation?

Answer
Definition

A behavioural therapy using relaxation and gradual exposure to replace the phobic response with relaxation.

Question
Reciprocal Inhibition

What is reciprocal inhibition in systematic desensitisation?

Answer
Concept

The process where relaxation inhibits anxiety in response to phobic stimuli.

Question
Flooding Therapy

How does flooding therapy treat phobias?

Answer
Method

By exposing the patient immediately and intensely to the feared stimulus until anxiety decreases through extinction.

Question
Flooding Advantage

What is a major advantage of flooding?

Answer
Advantage

It is faster than systematic desensitisation, often requiring fewer sessions.

Question
Flooding Disadvantage

What is a key disadvantage of flooding?

Answer
Disadvantage

It is very distressing, and some patients may drop out before completion.

Question
Avoidance Role

Why does avoidance maintain a phobia according to the behavioural explanation?

Answer
Reason

Because avoidance reduces anxiety, reinforcing the behaviour and preventing extinction of the fear.

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🌸 Behavioural Approach to Phobias Quiz

1. Which process explains how a phobia is acquired according to the behavioural approach?

Classical conditioning explains acquisition because a neutral stimulus becomes associated with a fearful event, triggering a phobia.

2. What maintains a phobia according to Mowrer’s two-process model?

Avoidance reduces anxiety, removing an unpleasant state, which reinforces the behaviour (negative reinforcement).

3. Which therapy involves gradual exposure paired with relaxation techniques?

SD uses relaxation and a hierarchy of fears to gradually expose patients and reduce phobic anxiety.

4. How does flooding reduce phobic responses?

Flooding forces exposure to the feared stimulus until the fear response diminishes through extinction.

5. Which of the following is a disadvantage of flooding therapy?

Flooding is intense and can cause high anxiety, causing some patients to quit treatment.

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