Rethinking avoidance: Toward a balanced approach to
avoidance in treating anxiety disorder
Exposure therapy, based on behaviourism and learning theories, is one of the most effective
treatments for anxiety disorders, but many patients remain symptomatic despite its efficacy.
Anxiety disorders develop when fear and anxiety become excessive and maladaptive.
Fear: Triggers immediate fight-or-flight responses.
Anxiety: Leads to muscle tension, heightened vigilance, and avoidance behaviours.
Avoidance behaviours play a crucial role in the development and maintenance of anxiety
disorders, as they prevent individuals from confronting their fears.
The DSM-5 considers avoidance a core feature of anxiety disorders, particularly in conditions
like agoraphobia and social anxiety disorder, though its role varies across disorders.
Understanding avoidance, considering both its negative and potentially adaptive aspects,
may lead to more effective treatments.
Learning theories of fear conditioning and avoidance learning
1. Pavlovian fear conditioning.
Avoidance behaviour is the direct response to fear and anxiety.
Pavlovian fear conditioning suggests that fear and anxiety develop through learned
associations Little Albert experiment.
In this case, a child was conditioned to fear a white rat after it was repeatedly paired
with a loud noise, leading to fear generalization to similar objects.
o This experiment illustrates the basic principles of:
Fear conditioning.
Fear generalization.
The context effect.
Extinction learning.
Avoidance.
This model explains avoidance behaviour as a response to fear. However, later studies
challenged its simplicity, showing that many people with phobias do not recall a
conditioning event or react differently to fear-inducing experiences.
These findings led to alternative theories on fear, anxiety, and avoidance learning.
, 2. Perceptual-defensive-recuperative model.
Fear and avoidance are survival mechanisms.
The fear response consists of three phases:
1. Perception phase = Detection of a threat, which triggers a fear response to prepare
for survival.
2. Defensive phase = Engagement in protective behaviours (fight-flight-freeze). Pain
sensitivity decreases, so the animal can continue defending itself if injured.
3. Recuperative phase = When the threat is gone, the animal shifts into recovery mode,
where healing behaviours start (resting, grooming, tending to injuries). Pain
sensitivity returns.
Fear is not just about avoiding pain, but about prioritizing survival. It inhibits pain-related
actions during danger, focusing instead on protective behaviours.
3. Skinnerian operant conditioning.
Avoidance persists because it prevents or reduces anxiety, reinforcing the behaviour even
though it may not be beneficial long-term.
Operant conditioning explains learning through the consequences of actions.
Behaviours increase or decrease based on their outcomes:
Reinforcement increases behaviour.
o Positive: behaviour is followed by a rewarding stimulus.
o Negative: an unpleasant stimulus is removed or prevented.
Punishment decreases behaviour.
o Positive: an unpleasant stimulus is added.
o Negative: a pleasant stimulus is removed.
Avoidance learning is a key example, where a person avoids something to reduce discomfort.
For instance, someone with social anxiety may avoid going to a party, leading to immediate
reduced anxiety. This negative reinforcement strengthens avoidance, making it more likely in
the future.
avoidance in treating anxiety disorder
Exposure therapy, based on behaviourism and learning theories, is one of the most effective
treatments for anxiety disorders, but many patients remain symptomatic despite its efficacy.
Anxiety disorders develop when fear and anxiety become excessive and maladaptive.
Fear: Triggers immediate fight-or-flight responses.
Anxiety: Leads to muscle tension, heightened vigilance, and avoidance behaviours.
Avoidance behaviours play a crucial role in the development and maintenance of anxiety
disorders, as they prevent individuals from confronting their fears.
The DSM-5 considers avoidance a core feature of anxiety disorders, particularly in conditions
like agoraphobia and social anxiety disorder, though its role varies across disorders.
Understanding avoidance, considering both its negative and potentially adaptive aspects,
may lead to more effective treatments.
Learning theories of fear conditioning and avoidance learning
1. Pavlovian fear conditioning.
Avoidance behaviour is the direct response to fear and anxiety.
Pavlovian fear conditioning suggests that fear and anxiety develop through learned
associations Little Albert experiment.
In this case, a child was conditioned to fear a white rat after it was repeatedly paired
with a loud noise, leading to fear generalization to similar objects.
o This experiment illustrates the basic principles of:
Fear conditioning.
Fear generalization.
The context effect.
Extinction learning.
Avoidance.
This model explains avoidance behaviour as a response to fear. However, later studies
challenged its simplicity, showing that many people with phobias do not recall a
conditioning event or react differently to fear-inducing experiences.
These findings led to alternative theories on fear, anxiety, and avoidance learning.
, 2. Perceptual-defensive-recuperative model.
Fear and avoidance are survival mechanisms.
The fear response consists of three phases:
1. Perception phase = Detection of a threat, which triggers a fear response to prepare
for survival.
2. Defensive phase = Engagement in protective behaviours (fight-flight-freeze). Pain
sensitivity decreases, so the animal can continue defending itself if injured.
3. Recuperative phase = When the threat is gone, the animal shifts into recovery mode,
where healing behaviours start (resting, grooming, tending to injuries). Pain
sensitivity returns.
Fear is not just about avoiding pain, but about prioritizing survival. It inhibits pain-related
actions during danger, focusing instead on protective behaviours.
3. Skinnerian operant conditioning.
Avoidance persists because it prevents or reduces anxiety, reinforcing the behaviour even
though it may not be beneficial long-term.
Operant conditioning explains learning through the consequences of actions.
Behaviours increase or decrease based on their outcomes:
Reinforcement increases behaviour.
o Positive: behaviour is followed by a rewarding stimulus.
o Negative: an unpleasant stimulus is removed or prevented.
Punishment decreases behaviour.
o Positive: an unpleasant stimulus is added.
o Negative: a pleasant stimulus is removed.
Avoidance learning is a key example, where a person avoids something to reduce discomfort.
For instance, someone with social anxiety may avoid going to a party, leading to immediate
reduced anxiety. This negative reinforcement strengthens avoidance, making it more likely in
the future.
