Fear of Heights, Acrophobia, Specific Phobia, Anxiety Disorder
Conditions
Brief summary
This study randomly assigned 114 participants with significant fear of heights to one of three conditions: a) a single session of virtual reality exposure; b) a single session of in vivo exposure; or c) a control condition. The aim of this study was to compare the efficacy of virtual reality exposure to the efficacy of in vivo exposure or no exposure for participants with significant fear of heights.
Interventions
BEHAVIORALExposure Therapy (In Vivo)
Participant completes a single session of exposure therapy for fear of heights by looking over railings into an atrium at various floor levels in a virtual environment.
BEHAVIORALExposure Therapy (Virtual Reality)
Participant completes a single session of exposure therapy for fear of heights by looking over railings into an atrium at various floor levels in a real environment.
Sponsors
University of Notre Dame
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE
Intervention model description
Eligible participants were randomly assigned to one of three conditions: a) single session virtual reality exposure; b) single session in vivo exposure; c) waitlist control
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Score \>= 45 on the Acrophobia Questionnaire (AQ)
Exclusion criteria
* Already receiving therapy specifically for fear of heights. * Has any contraindications to using a virtual reality headset.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Acrophobia Questionnaire (AQ) | Immediately Post-Treatment (Controlling for Baseline Scores) | Participants completed the anxiety subscale of the AQ, a 20-item questionnaire that assesses self-reported anxiety related to acrophobia. Scores for the subscale are summed, and totals range from 0 to 120, with higher scores indicating greater anxiety. |
| Behavioral Approach Task (BAT) | Immediately Post-Treatment (Controlling for Baseline Scores) | Participants walked up a staircase until they reach the highest level they can complete, while stopping to look over the ledge toward the floor at each landing. During each BAT, fear response was assessed behaviorally (highest step reached) and subjectively (self reported levels of fear). |
| Heights Interpretation Questionnaire (HIQ) | Immediately Post-Treatment (Controlling for Baseline Scores) | Participants completed the HIQ, a 16-item questionnaire that assesses self-reported interpretations of an imagined experience of heights. Items are summed scored, and totals ranged from 16 to 80, with higher scores indicating greater height fear-relevant interpretation bias. |
Other
| Measure | Time frame | Description |
|---|---|---|
| Patient Health Questionnaire (PHQ) - 8 item version | Baseline, Immediately Post-Treatment; 1 Week Post-Treatment | The PHQ is traditionally a 9 item measure, but this study used an 8 item version that did not include item 9 (assessing suicidality). Scores on this version range from 0 to 24, with higher scores indicating higher levels of depressive symptoms. |
| Anxiety Sensitivity Index (ASI) | Baseline, Immediately Post-Treatment; 1 Week Post-Treatment | The ASI is a 16 item measure assessing participants' fear of and sensitivity to physiological symptoms of anxiety. Scores range from 0-64, with higher scores indicating higher levels of anxiety sensitivity. |
| DSM-5 (Diagnostic and Statistical Manual of Mental Disorders - 5) Severity Measure for Specific Phobia (Adapted for Acrophobia) | Baseline, Immediately Post-Treatment; 1 Week Post-Treatment | Participants completed the DSM-5 Severity Measure, a 10-item questionnaire that assesses the severity of DSM-5 symptoms of specific phobias. Total scores range from 0 to 40, with higher scores indicating higher levels of specific phobia symptomology. |
| Affective Control Scale (ACS) - Anxiety Subscale | Baseline, Immediately Post-Treatment; 1 Week Post-Treatment | The 13-item anxiety subscale of the ACS measures participants' fear tolerance. Scores range from 13-91, with higher scores indicating lower levels of anxiety fear tolerance. |
| High Place Phenomenon Index (HPPI) | Baseline, Immediately Post-Treatment; 1 Week Post-Treatment | The HPPI is a 3-item measure that assesses participants' self-reported experience of the high place phenomenon. Scores range from 3-21, with higher scores indicating more frequent experience of the high place phenomenon. |
Countries
United States
Outcome results
None listed