Study Overview This study aims to evaluate the effectiveness of a newly developed Virtual Reality (VR) behavioral activation software program for individuals experiencing symptoms of depression. Behavioral activation is a well-established psychological approach that helps individuals re-engage in positive, rewarding activities to reduce depressive symptoms and improve mood. By translating this approach into an immersive VR environment using hand-tracking technology, the study explores whether technology-enhanced interventions can make therapy more accessible, engaging, and effective. What the Study InvolvesParticipants in this study are randomly assigned to one of two groups:VR Behavioral Activation Group (Intervention): Participants in this group receive a structured behavioral activation program delivered entirely within a customized virtual reality environment. Using advanced hand-tracking technology instead of traditional controllers, participants interact naturally with the virtual world to complete rewarding tasks and activities designed to boost engagement and mood. Waitlist Control Group: Participants in this group do not receive the VR intervention during the active study period, serving as a comparison baseline to accurately measure the specific effects of the VR software. However, to ensure ethical standards and support all participants, individuals in this group receive psychological education (psychoeducation) after the data collection phase is fully completed. Research Goals The primary goal is to determine if the VR-focused behavioral activation program successfully reduces depression severity and enhances overall behavioral activation levels compared to the control group. Additionally, researchers will evaluate how the intervention influences the body's behavioral approach and inhibition systems, providing insights into the underlying psychological mechanisms of VR-driven therapy.

This study was conducted to evaluate the effect of a virtual reality-based behavioral activation intervention on reducing depression symptoms. Considering that depression negatively affects the daily functionality of individuals, an interactive behavioral activation intervention was developed in a virtual reality environment and the effectiveness of this intervention was tested. A randomized controlled experimental design was used in the study. The sample consisted of 50 participants with moderate to high levels of depression (experimental group = 25, control group = 25). The experimental group received a behavioral activation intervention in a virtual reality environment for 4 weeks, while the control group was placed on a waiting list. The intervention was delivered through virtual reality goggles in the morning. In the virtual reality environment, participants simulated their morning routines, such as waking up, tidying the room, preparing breakfast, and getting dressed. Sociodemographic Information Form, Behavioral Inhibition System and Behavioral Activation System Scale, Beck Depression Inventory, Presence Questionnaire, Virtual Reality Application Observation Form and Semi-Structured Interview Form for Virtual Reality Applications were used in the data collection process. In the data analysis phase, Mixed Design Repeated Measures ANOVA was planned for behavioral activation and behavioral inhibition variables, and F1-LD-F1 design analysis was planned for depression and emotion regulation variables.

Inclusion Criteria:

• Being 18 years of age or older.
• Being literate (ability to read and write).
• Providing written informed consent by reading and signing the informed consent form.
• Having a score of 17 or above on the Beck Depression Inventory (BDI).
• Having a score of 41 or below on the Behavioral Activation subscale of the Behavioral Inhibition System and Behavioral Activation System (BIS/BAS) Scale.
• Having a score of 21 or above on the Behavioral Inhibition subscale of the Behavioral Inhibition System and Behavioral Activation System (BIS/BAS) Scale.

Exclusion Criteria:

• Having advanced vision problems that impair visual function, such as cataracts.
• Having uncorrected visual impairments, such as color blindness.
• Having any psychiatric or neurological disorder characterized by impaired reality testing.
• Being under 18 years of age.