Trend AnalysisPsychology & Cognitive ScienceRandomized Controlled Trial
VR Exposure Therapy: Virtual Reality for Anxiety Disorders
Exposure therapy — the systematic, controlled confrontation with feared stimuli — remains one of the most effective treatments for anxiety disorders. Its central limitation has always been practica...
By Sean K.S. Shin
This blog summarizes research trends based on published paper abstracts. Specific numbers or findings may contain inaccuracies. For scholarly rigor, always consult the original papers cited in each post.
Exposure therapy — the systematic, controlled confrontation with feared stimuli — remains one of the most effective treatments for anxiety disorders. Its central limitation has always been practical: creating safe, controllable, repeatable exposure environments for phobias, PTSD, and social anxiety is difficult, expensive, and sometimes impossible. Virtual reality (VR) offers an apparent solution: immersive simulated environments where the therapist controls every variable. The 2024-2025 literature provides the most comprehensive evidence to date on whether VR exposure therapy (VRET) delivers on this promise.
The Research Landscape
Zeng et al. (2025), in a systematic review and meta-analysis of 33 randomized controlled trials involving 3,182 participants published in Frontiers in Psychiatry, found that VR therapy significantly improved anxiety symptoms compared to conventional interventions (SMD = -0.95, 95% CI -1.22 to -0.69). This represents a large effect size — clinically meaningful and statistically robust across diverse anxiety presentations including generalized anxiety, social anxiety, and specific phobias.
However, the analysis revealed substantial heterogeneity across studies (I-squared values were high), and the authors note that the quality of included studies was variable. The large pooled effect may partly reflect comparison conditions that included waitlist controls, which inflate apparent treatment effects.
VRET vs. In-Vivo Exposure: Head-to-Head Comparison
The clinically relevant question is not whether VRET is better than nothing, but whether it is as good as traditional in-vivo exposure therapy. Kuleli et al. (2025) address this directly in a systematic review and meta-analysis comparing VRET with in-vivo exposure for social anxiety and specific phobias. Their findings suggest that VRET produces comparable outcomes to in-vivo exposure therapy at post-treatment, with no statistically significant difference in symptom reduction between the two modalities.
This equivalence finding is important for several reasons. In-vivo exposure is the gold standard, so equivalence rather than superiority is the appropriate benchmark. If VRET achieves similar outcomes while offering advantages in controllability, repeatability, cost per session (once equipment is acquired), and patient willingness to engage, then equivalence constitutes a practical advance.
Social Anxiety: The Most Studied Application
Tan et al. (2024), in a meta-analysis of 17 RCTs focused specifically on social anxiety disorder, found that VRET had greater efficacy than waitlist comparators at both post-intervention and follow-up assessment. When compared to other active interventions (CBT, in-vivo exposure), VRET showed similar effects — again, equivalence rather than superiority.
A subgroup analysis revealed an interesting moderator: combining VRET with cognitive behavioral therapy produced larger effects than VRET alone. This suggests that VR exposure works best as a delivery mechanism for established therapeutic principles rather than as a standalone intervention — it is a tool for therapy, not a replacement for therapy.
Pan et al. (2025) demonstrated this integration principle in practice, testing internet-delivered CBT combined with VRET for social anxiety disorder in a Hong Kong-based RCT. The combined approach showed significant reductions in social anxiety symptoms, and the cultural context is notable — most VRET research has been conducted in Western settings, and this study provides evidence that the approach is effective in a Chinese-speaking population.
Adolescents: Extending the Age Range
Beele et al. (2024) conducted a pilot study of VRET for school-related anxiety in adolescents, a population that has been largely absent from the VRET literature. The study found that VRET was feasible and acceptable to adolescent participants, with preliminary evidence of anxiety reduction. While the sample size was small and the design was uncontrolled, the study demonstrates that VRET can be adapted for younger populations and for anxiety presentations (school anxiety) that are difficult to address with in-vivo exposure because the feared situations cannot be easily replicated in a clinical setting.
Therapist Training: A Secondary Benefit
An often-overlooked advantage of VR technology is its potential for therapist training. Kemp et al. (2025) conducted a randomized feasibility trial of VR simulation for training therapists in the delivery of exposure therapy. The rationale is straightforward: many therapists are trained in the theory of exposure therapy but have limited opportunities to practice its delivery in controlled conditions. VR simulation allows trainees to practice with virtual patients who present varying levels of anxiety, avoidance, and treatment response.
This secondary application may prove as important as direct patient treatment. One of the barriers to effective exposure therapy is not patient unwillingness but therapist undertraining — studies consistently find that many therapists avoid using exposure techniques because they lack confidence in their delivery.
Critical Analysis: Claims and Evidence
<
| Claim | Evidence | Verdict |
|---|
| VRET significantly reduces anxiety symptoms | Zeng et al. 2025 (33 RCTs, N=3,182) | Supported — large effect size, robust meta-analysis |
| VRET is equivalent to in-vivo exposure | Kuleli et al. 2025 (systematic review + meta-analysis) | Supported — no significant difference at post-treatment |
| VRET + CBT outperforms VRET alone | Tan et al. 2024 subgroup analysis | Supported — integration produces larger effects |
| VRET works cross-culturally | Pan et al. 2025 (Hong Kong RCT) | Preliminary — one non-Western RCT |
| VRET is feasible for adolescents | Beele et al. 2024 (pilot study) | Promising — but uncontrolled and small sample |
| VR can improve therapist training | Kemp et al. 2025 (feasibility RCT) | Feasible — efficacy data not yet available |
Open Questions
Long-term maintenance: Most studies report outcomes at post-treatment or short-term follow-up. Does VRET produce durable therapeutic gains, or do gains erode faster than with in-vivo exposure (where the real-world practice component may reinforce learning)?Optimal VR parameters: What level of immersion is necessary? Head-mounted displays vs. CAVE systems vs. 360-degree video — does the technology platform matter for therapeutic outcomes, or is the therapeutic relationship and exposure structure more important?Personalization: Current VRET environments are largely standardized. Adaptive systems that modify virtual environments in real-time based on physiological feedback (heart rate, skin conductance, eye tracking) could personalize the exposure process, but this remains largely experimental.Cost-effectiveness: VRET requires hardware investment. Is the cost per quality-adjusted life year (QALY) favorable compared to traditional therapy? Health economic analyses are scarce.Cybersickness: A non-trivial proportion of users experience motion sickness or discomfort in VR environments. This limits the applicability of VRET for some patients and may introduce a selection bias in research studies.What This Means for Your Research
For clinical researchers, the equivalence findings open opportunities to study VRET as a scalable alternative to in-vivo exposure, particularly for presentations where real-world exposure is impractical. For technologists, the integration finding — that VRET works best when combined with established therapy — should guide development toward tools that support clinicians rather than replace them.
Explore related work through ORAA ResearchBrain.
Exposure therapy — the systematic, controlled confrontation with feared stimuli — remains one of the most effective treatments for anxiety disorders. Its central limitation has always been practical: creating safe, controllable, repeatable exposure environments for phobias, PTSD, and social anxiety is difficult, expensive, and sometimes impossible. Virtual reality (VR) offers an apparent solution: immersive simulated environments where the therapist controls every variable. The 2024-2025 literature provides the most comprehensive evidence to date on whether VR exposure therapy (VRET) delivers on this promise.
The Research Landscape
Meta-Analytic Evidence: How Effective Is VRET?
Zeng et al. (2025), in a systematic review and meta-analysis of 33 randomized controlled trials involving 3,182 participants published in Frontiers in Psychiatry, found that VR therapy significantly improved anxiety symptoms compared to conventional interventions (SMD = -0.95, 95% CI -1.22 to -0.69). This represents a large effect size — clinically meaningful and statistically robust across diverse anxiety presentations including generalized anxiety, social anxiety, and specific phobias.
However, the analysis revealed substantial heterogeneity across studies (I-squared values were high), and the authors note that the quality of included studies was variable. The large pooled effect may partly reflect comparison conditions that included waitlist controls, which inflate apparent treatment effects.
VRET vs. In-Vivo Exposure: Head-to-Head Comparison
The clinically relevant question is not whether VRET is better than nothing, but whether it is as good as traditional in-vivo exposure therapy. Kuleli et al. (2025) address this directly in a systematic review and meta-analysis comparing VRET with in-vivo exposure for social anxiety and specific phobias. Their findings suggest that VRET produces comparable outcomes to in-vivo exposure therapy at post-treatment, with no statistically significant difference in symptom reduction between the two modalities.
This equivalence finding is important for several reasons. In-vivo exposure is the gold standard, so equivalence rather than superiority is the appropriate benchmark. If VRET achieves similar outcomes while offering advantages in controllability, repeatability, cost per session (once equipment is acquired), and patient willingness to engage, then equivalence constitutes a practical advance.
Social Anxiety: The Most Studied Application
Tan et al. (2024), in a meta-analysis of 17 RCTs focused specifically on social anxiety disorder, found that VRET had greater efficacy than waitlist comparators at both post-intervention and follow-up assessment. When compared to other active interventions (CBT, in-vivo exposure), VRET showed similar effects — again, equivalence rather than superiority.
A subgroup analysis revealed an interesting moderator: combining VRET with cognitive behavioral therapy produced larger effects than VRET alone. This suggests that VR exposure works best as a delivery mechanism for established therapeutic principles rather than as a standalone intervention — it is a tool for therapy, not a replacement for therapy.
Pan et al. (2025) demonstrated this integration principle in practice, testing internet-delivered CBT combined with VRET for social anxiety disorder in a Hong Kong-based RCT. The combined approach showed significant reductions in social anxiety symptoms, and the cultural context is notable — most VRET research has been conducted in Western settings, and this study provides evidence that the approach is effective in a Chinese-speaking population.
Adolescents: Extending the Age Range
Beele et al. (2024) conducted a pilot study of VRET for school-related anxiety in adolescents, a population that has been largely absent from the VRET literature. The study found that VRET was feasible and acceptable to adolescent participants, with preliminary evidence of anxiety reduction. While the sample size was small and the design was uncontrolled, the study demonstrates that VRET can be adapted for younger populations and for anxiety presentations (school anxiety) that are difficult to address with in-vivo exposure because the feared situations cannot be easily replicated in a clinical setting.
Therapist Training: A Secondary Benefit
An often-overlooked advantage of VR technology is its potential for therapist training. Kemp et al. (2025) conducted a randomized feasibility trial of VR simulation for training therapists in the delivery of exposure therapy. The rationale is straightforward: many therapists are trained in the theory of exposure therapy but have limited opportunities to practice its delivery in controlled conditions. VR simulation allows trainees to practice with virtual patients who present varying levels of anxiety, avoidance, and treatment response.
This secondary application may prove as important as direct patient treatment. One of the barriers to effective exposure therapy is not patient unwillingness but therapist undertraining — studies consistently find that many therapists avoid using exposure techniques because they lack confidence in their delivery.
Critical Analysis: Claims and Evidence
<
| Claim | Evidence | Verdict |
|---|
| VRET significantly reduces anxiety symptoms | Zeng et al. 2025 (33 RCTs, N=3,182) | Supported — large effect size, robust meta-analysis |
| VRET is equivalent to in-vivo exposure | Kuleli et al. 2025 (systematic review + meta-analysis) | Supported — no significant difference at post-treatment |
| VRET + CBT outperforms VRET alone | Tan et al. 2024 subgroup analysis | Supported — integration produces larger effects |
| VRET works cross-culturally | Pan et al. 2025 (Hong Kong RCT) | Preliminary — one non-Western RCT |
| VRET is feasible for adolescents | Beele et al. 2024 (pilot study) | Promising — but uncontrolled and small sample |
| VR can improve therapist training | Kemp et al. 2025 (feasibility RCT) | Feasible — efficacy data not yet available |
Open Questions
Long-term maintenance: Most studies report outcomes at post-treatment or short-term follow-up. Does VRET produce durable therapeutic gains, or do gains erode faster than with in-vivo exposure (where the real-world practice component may reinforce learning)?Optimal VR parameters: What level of immersion is necessary? Head-mounted displays vs. CAVE systems vs. 360-degree video — does the technology platform matter for therapeutic outcomes, or is the therapeutic relationship and exposure structure more important?Personalization: Current VRET environments are largely standardized. Adaptive systems that modify virtual environments in real-time based on physiological feedback (heart rate, skin conductance, eye tracking) could personalize the exposure process, but this remains largely experimental.Cost-effectiveness: VRET requires hardware investment. Is the cost per quality-adjusted life year (QALY) favorable compared to traditional therapy? Health economic analyses are scarce.Cybersickness: A non-trivial proportion of users experience motion sickness or discomfort in VR environments. This limits the applicability of VRET for some patients and may introduce a selection bias in research studies.What This Means for Your Research
For clinical researchers, the equivalence findings open opportunities to study VRET as a scalable alternative to in-vivo exposure, particularly for presentations where real-world exposure is impractical. For technologists, the integration finding — that VRET works best when combined with established therapy — should guide development toward tools that support clinicians rather than replace them.
Explore related work through ORAA ResearchBrain.
References (6)
[1] Zeng, W., Xu, J., Yu, J., & Chu, X. (2025). Effectiveness of virtual reality therapy in the treatment of anxiety disorders in adolescents and adults: a systematic review and meta-analysis of randomized controlled trials. Frontiers in Psychiatry.
[2] Kuleli, D., Tyson, P., Davies, N., & Zeng, B. (2025). Examining the comparative effectiveness of virtual reality and in-vivo exposure therapy on social anxiety and specific phobia: A systematic review & meta-analysis. Journal of Behavioral and Cognitive Therapy.
[3] Tan, Y., Chang, V. Y. X., Ang, W., et al. (2024). Virtual reality exposure therapy for social anxiety disorders: a meta-analysis and meta-regression of randomized controlled trials. Anxiety, Stress, & Coping.
[4] Pan, J., Thew, G. R., & Clark, D. M. (2025). Effectiveness of internet-delivered cognitive behavioral therapy with virtual reality exposure therapy for social anxiety disorder: A randomized controlled trial in Hong Kong. Journal of Affective Disorders.
[5] Beele, G., Liesong, P., & Bojanowski, S. (2024). Virtual Reality Exposure Therapy for Reducing School Anxiety in Adolescents: Pilot Study. JMIR.
[6] Kemp, J., Rosen, A., & Kim, H. (2025). Enhancing Therapist Training in the Delivery of Exposure Therapy for Individuals with Anxiety Disorders using Virtual Reality Simulation: A Randomized Feasibility Trial. JMIR.