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How anxiety works

4 minute read

Anxiety is the body's response to a perceived threat. When the brain decides something dangerous may be coming, it prepares you to deal with it: heart rate rises, breathing quickens, muscles tense, attention narrows onto the threat, and thinking speeds up. None of this is a malfunction. It is the same system that lets you jump back from a car you did not see coming.

The alarm is honest, the appraisal may not be

The trouble comes from what sets the alarm off. It responds to your appraisal of a situation rather than to the situation itself. If you judge a meeting to be a place where you will be humiliated, your body prepares for humiliation, whether or not humiliation is likely.

Cognitive models of anxiety describe a consistent pattern in that appraisal. The chance of something bad happening is overestimated. How bad it would be is overestimated. Your ability to cope is underestimated. And the help available from other people is underestimated. Together, these turn ordinary situations into threats.

Why the feeling is so convincing

Anxiety feels like information. A pounding heart in a supermarket feels like proof you might collapse. A hot face in a conversation feels like proof everyone is staring. This is emotional reasoning: treating the intensity of a feeling as evidence about the world.

Clark's work on panic showed how this becomes a loop. A sensation is noticed, interpreted as dangerous, which produces fear, which produces more sensations, which are read as further evidence of danger. In social anxiety, the loop runs through self-focused attention: you turn inward to monitor how you are coming across, which gives you a vivid but unreliable picture, and you take that picture as fact.

The three parts of anxiety

It helps to separate anxiety into three strands, because each responds to a different kind of work.

Physical. Racing heart, tight chest, shaking, sweating, dizziness, nausea. Uncomfortable and harmless in themselves.
Cognitive. The predictions and images: "I will faint," "they will laugh," "I will not cope."
Behavioral. What you do in response: avoid, escape, or protect yourself with safety behaviors.

Behavioral experiments target the cognitive strand by working on the behavioral one. You change what you do, and you watch what that does to the prediction.

Anxiety that persists

Fear that is proportionate to real danger fades when the danger passes. Anxiety that persists is usually being maintained by something: avoidance, safety behaviors, self-focused attention, or a belief that never gets tested. Clark called these "maintaining processes," and finding them is the first job in treatment. The next two articles cover the two most common.

Anxiety is uncomfortable, not dangerous. The sensations peak and pass on their own, which is one of the things an experiment lets you discover first hand.

References

Beck, A. T., Emery, G., & Greenberg, R. L. (1985). Anxiety disorders and phobias: A cognitive perspective. Basic Books.
Clark, D. M. (1986). A cognitive approach to panic. Behaviour Research and Therapy, 24(4), 461–470. doi.org/10.1016/0005-7967(86)90011-290011-2)
Clark, D. M. (1999). Anxiety disorders: Why they persist and how to treat them. Behaviour Research and Therapy, 37(Suppl. 1), S5–S27. doi.org/10.1016/S0005-7967(99)00048-000048-0)
Clark, D. M., & Wells, A. (1995). A cognitive model of social phobia. In R. G. Heimberg, M. R. Liebowitz, D. A. Hope, & F. R. Schneier (Eds.), Social phobia: Diagnosis, assessment, and treatment (pp. 69–93). Guilford Press.
Barlow, D. H. (2002). Anxiety and its disorders: The nature and treatment of anxiety and panic (2nd ed.). Guilford Press.

Helpful links

Educational content, not medical advice or a substitute for professional care. Ready to try it? Open the online worksheet or get the app.