Behavioural explanation of phobias Flashcards
How does classical conditioning create phobias?
UCS(being bitten) and NS(dog) create UCR(fear)
Then CS(dog) causes CR(fear)
What are the clinical characteristics of phobias?
Behavioural- avoidance
Emotional- Excessive and unreasonable fear and anxiety
Cognitive- Selective attention and irrational beliefs
What was Mowrer’s 1960 model?
Two process model:
1st process- acquired through classical
2nd process- maintained by operant conditioning
How are phobias maintained by operant conditioning?
Negative reinforcement- avoids object, reinforced with reduced anxiety, so they keep avoiding it
Strengths of behavioural explanation
Practical applications- therapy- can be unlearnt- patients must be exposed to feared stimulus
Weaknesses of behavioural explanation
Ignores cognitive element
Some phobias may be down to biology/evolution, things that may have been a source of danger earlier in history
Don’t always follow a trauma- reduced validity
What are the two behavioural treatments of phobias?
Systematic desensitisation
Flooding
What is systematic desensitisation?
Uses counter-conditioning to treat phobias
Client and therapist develop fear hierarchy, client learns relaxation techniques, exposed to fears while relaxed
Systematic desensitisation evaluation
Research support- McGrath et al (1990), 75% patients effectively treated
Not effective in treating all phobias, such as evolutionary phobias
What is flooding?
Patient completely exposed to fear, unable to avoid and reinforce phobia, patient taught relaxation techniques
Two types: In vivo(real) and In Vitro(imaginary)
Flooding evaluation
Cost effective
Works quickly
Can be highly traumatic
Not effective for all phobias, e.g. social phobias