Assessment & Research

Cognitive changes during in vivo exposure in an agoraphobic.

Last et al. (1984) · Behavior modification 1984
★ The Verdict

In-vivo exposure cuts phobic behavior fast, but thoughts may dip later and relapse can still happen.

✓ Read this if BCBAs working with adults who avoid leaving home.
✗ Skip if Clinicians treating tics or social anxiety only online.

01Research in Context

01

What this study did

One woman with severe agoraphobia faced real-world situations she feared. This is called in-vivo exposure.

Researchers tracked her phobic symptoms and her thoughts before, right after, and one year later.

02

What they found

Right after exposure her fear dropped but her thoughts got worse. One year later her fear crept back up.

Surprisingly, her thoughts had improved by then, showing the opposite pattern from the first test.

03

How this fits with other research

Bitran et al. (2008) ran an 8-day intensive version of the same in-vivo method with adults who had severe agoraphobia. They saw steady gains, showing the single-case idea can scale up.

Vassos et al. (2023) swapped real places for imagined ones in people with eating fears. Both studies found fear can drop even when thoughts lag behind.

Tortella-Feliu et al. (2011) used virtual reality instead of real streets and got the same fear drop. The tool changes, the exposure rule stays.

04

Why it matters

You can ease phobic behavior with exposure even if the client’s thoughts look worse at first. Keep tracking both sides. If fear returns later, check what the client is telling themselves then. The story can flip.

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→ Action — try this Monday

Run one in-vivo exposure task, score fear and thought ratings before and after, then repeat next week.

02At a glance

Intervention
other
Design
case study
Sample size
1
Population
anxiety disorder
Finding
mixed

03Original abstract

This case study assessed the relationship between cognitive changes and treatment outcome during in vivo exposure treatment of an agoraphobic, and at one year following the end of treatment. Results indicated that although the client was notably improved with respect to his phobic condition by the end of treatment (on all self-report, behavioral, and physiological measures), contrary to expectations, he had worsened on cognitive measures at this time. However, at one year following treatment, measures of fear and avoidance showed that relapse had occurred, while results from cognitive assessment revealed that the client's cognitions had improved. The relationship of cognitions and cognitive changes to short-term treatment outcome and the maintenance of phobic improvement over time is discussed.

Behavior modification, 1984 · doi:10.1177/01454455840081006