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TerminatedNCT02905279Updated Dec 8, 2020

Spider Phobia Opposite Action Treatment Study

An interventional study of Biofeedback Relaxation Training and Exposure Therapy in Specific Phobia, sponsored by University of Texas at Austin. Terminated at 1 site in United States. Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2020-12-08.

Sponsored by University of Texas at Austin · Not applicable, Interventional, and Treatment

Why this study was terminated
Doctoral student running the study left for internship and did not finish the study
Phase
Not applicable
Study type
Interventional
Enrollment
44
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
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Study summary

This study tests the effectiveness of exposure therapy for fear of spiders as enhanced by the use of antagonistic or opposite actions during treatment. The goal of the study is to compare the efficacy threat-relevant opposite actions and threat-irrelevant opposite actions in extinguishing fear.

Read the detailed description

This study tests whether exposure therapy for fear of spiders can be enhanced with the use of opposite actions, which are actions opposite to fear-related action tendencies. The investigators will test two sub-types of opposite actions (a) threat-relevant opposite actions, which are actions antagonistic to specific threats associated with spider phobia, and (b) threat-irrelevant opposite actions, which are actions antagonistic to the fear response, but unrelated to specific threats associated with spider phobia. This exposure therapy enhanced with opposite actions will be compared with two control groups: standard exposure therapy and non-specific anxiety treatment (biofeedback relaxation training).

Individuals between the ages of 18-65 with elevated fear of spiders are randomly assigned to one of four treatment conditions (1) biofeedback relaxation training, (2) standard exposure therapy, (3) exposure therapy with threat-relevant opposite actions, and (4) exposure therapy with threat-irrelevant opposite actions. All participants undergo an online prescreen and a face-to-face screening assessment to determine eligibility and baseline (pre-treatment) symptom severity. Participants additionally complete assessments directly after treatment (post-treatment), and approximately two weeks after treatment (follow-up). The pre-treatment assessment occurs on the same day as treatment, the post-treatment assessment occurs during the treatment visit as soon as the treatment procedure is complete, and the follow-up assessment occurs within a window of 14-21 days after the completion of treatment. Participants complete two behavioral approach tests (in the treatment context and in the generalization context) at pre-treatment, post-treatment, and follow-up. Participants complete a battery of self-report questionnaires at pre-treatment and follow-up.

02

Conditions studied

  • Specific Phobia

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Keywords

  • spider phobia
  • animal phobia
  • exposure therapy
  • biofeedback
  • relaxation training
03

In context

Phobic Disorders

135 studies on the registry are indexed under Phobic Disorders; 16 are open to participants now.

This study's enrollment of 44 is below the median of 68 across 122 interventional studies indexed under Phobic Disorders.

Browse Phobic Disorders studies →

Lead sponsor

University of Texas at Austin is the lead sponsor of 319 studies on the registry; 78 are open to participants now.

Of its 10 completed or terminated interventional studies of FDA-regulated products, 5 (50%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • At Prescreen:

    • Total score of greater than or equal to 70 on the Fear of Spiders - Questionnaire (with higher scores indicating higher fear levels).
    • Indicates ongoing fear of spiders and inability to complete close approach towards spiders on brief questionnaire.
  • At Screening visit: inability to complete close approach toward spiders as determined by the treatment context and generalization context Behavioral Approach Tests

Exclusion criteria

Exclusion Criteria:

  • Currently receiving psychotherapy for spider phobia
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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
44 participants (actual)

Study arms

  • Active comparator
    Biofeedback

    Biofeedback Relaxation Training

    Behavioral: Biofeedback Relaxation Training

  • Active comparator
    Standard Exposure

    Exposure Therapy

    Behavioral: Exposure Therapy

  • Experimental
    Exposure with Threat-Relevant OAs.

    Exposure with Threat-Relevant Opposite Actions

    Behavioral: Exposure with Threat-Relevant Opposite Actions

  • Experimental
    Exposure with Threat-Irrelevant OAs

    Exposure with Threat-Irrelevant Opposite Actions

    Behavioral: Exposure with Threat-Irrelevant Opposite Actions

Interventions

  • BehavioralBiofeedback Relaxation Training

    Participants will receive one-session biofeedback relaxation training (24 minutes) for anxiety reduction. Prior to biofeedback, participants will receive education about spiders and the development and maintenance of spider phobia.

  • BehavioralExposure Therapy

    Participants will receive one-session exposure therapy (24 minutes) for fear of spiders. Prior to exposure therapy, participants will receive education about spiders and the development and the development and maintenance of spider phobia.

  • BehavioralExposure with Threat-Relevant Opposite Actions

    Participants will receive one-session exposure therapy (24 minutes) for fear of spiders. During exposure, participants will engage in actions opposite to the tendencies associated with threat avoidance. Prior to exposure therapy, participants will receive education about spiders and the development and maintenance of spider phobia.

  • BehavioralExposure with Threat-Irrelevant Opposite Actions

    Participants will receive one-session exposure therapy (24 minutes) for fear of spiders. During exposure therapy, participants will engage in actions opposite of the action tendencies associated with the fear, but unrelated to the specific threats associated with spider phobia. Prior to exposure therapy, participants will receive education about spiders and the development and maintenance of spider phobia.

06

What researchers measure

Primary outcomes

  1. Change in Performance on a Behavioral Approach Test in a Generalization Context (Pre-treatment to 2-week Follow-Up)

    Change in peak subjective fear (0 - 100 scale), behavioral approach (0 - 13 scale), and physiological reactivity (heart rate and skin conductance) to a live spider not used during treatment (generalization context) from pre-treatment to follow-up

    Time frame: Change from pre-treatment (same day as treatment) to follow-up (window of 14-21 days after treatment)

Secondary outcomes

  1. Change in Performance on a Behavioral Approach Test in a Generalization Context (Pre-treatment to Post-treatment)

    Change in peak subjective fear (0 - 100 scale), behavioral approach (0 - 13 scale), and physiological reactivity (heart rate and skin conductance) to a live spider not used during treatment (generalization context) from pre-treatment to post-treatment.

    Time frame: Change from pre-treatment (same day as treatment) to post-treatment (within 30 minutes of completion of the treatment procedure)

  2. Change in Performance on a Behavioral Approach Test in the Treatment Context (Pre-treatment to 2-week Follow-Up)

    Change in peak subjective fear (0 - 100), behavioral approach (0 - 10), and physiological reactivity (heart rate and skin conductance) to a live spider used during treatment (treatment context) from pre-treatment to follow-up

    Time frame: Change from pre-treatment (same day as treatment) to follow-up (window of 14-21 days after treatment)

  3. Change in Performance on a Behavioral Approach Test in the Treatment Context (Pre-treatment to Post-treatment)

    Change in peak subjective fear (0 - 100), behavioral approach (0 - 10), and physiological reactivity (heart rate and skin conductance) to a live spider used during treatment (treatment context) from pre-treatment to post-treatment.

    Time frame: Change from pre-treatment (same day as treatment) to post-treatment (within 30 minutes of completion of the treatment procedure)

  4. Change in Fear of Spiders Questionnaire (Pre-treatment to 2-week Follow-Up)

    Change in psychometrically validated questionnaire assessing spider phobia severity from pre-treatment to follow-up.

    Time frame: Change from pre-treatment (same day as treatment) to follow-up (window of 14-21 days after treatment)

  5. Change in Armfield and Mattiske Disgust Questionnaire (Pre-treatment to 2-week Follow-Up)

    Change in psychometrically validated questionnaire assessing severity of disgust response related to spider phobia from pre-treatment to follow-up.

    Time frame: Change from pre-treatment (same day as treatment) to follow-up (window of 14-21 days after treatment)

  6. Change in Spider Belief Questionnaire from pre-treatment to follow-up (Pre-treatment to 2-Week Follow-Up)

    Change in psychometrically validated questionnaire assessing cognitions related to spider phobia from pre-treatment to follow-up.

    Time frame: Change from pre-treatment (same day as treatment) to follow-up (window of 14-21 days after treatment)

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Study locations

1 site
  • Laboratory for the Study of Anxiety Disorders, University of Texas at Austin
    Austin, Texas 78712, United States
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References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 8, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT02905279
Lead sponsor
University of Texas at Austin
Responsible party
Michael J. Telch (Professor, University of Texas at Austin) — Principal investigator
First posted
Sep 19, 2016
Start date
Jun 1, 2016
Primary completion
Dec 3, 2017
Completion
Dec 12, 2017
Last update
Dec 8, 2020

Study contacts

Michael J Telch, PhD
study director · The University of Texas at Austin

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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This study is terminated, as verified in Dec 2020. You cannot join it, but the record below documents what was studied.

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