NCT07471529 Activating Social Resources in Psychotherapy-Seeking Individuals: Effectiveness and Timing of a Social Support Just-in-Time Adaptive Intervention

Trial Parameters

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Brief Summary

This study evaluates a Just-In-Time Adaptive Intervention (JITAI) aiming to foster social support processes for adults with elevated depressive symptoms awaiting outpatient psychotherapy. Utilizing a daily-level micro-randomized trial (MRT) design conducted over 21 days, participants are assessed six times daily. Participants are randomized across four conditions: (1) vulnerability-triggered, (2) vulnerability and receptivity-triggered, (3) support-need-triggered, and (4) a no-intervention control. The primary objective of this study is to evaluate the effectiveness of the JITAI in reducing daily depressive symptoms and increasing received social support (primary outcomes), as well as reducing daily loneliness and enhancing perceived social support (secondary outcomes). Furthermore, the study aims to compare the relative efficacy of three distinct triggering strategies to identify the most effective timing for intervention delivery.

Eligibility Criteria

Inclusion Criteria: * indicating to seek outpatient psychotherapy * elevated levels of self-reported depressive symptoms (Beck Depression Inventory-II (BDI) score \> 13 (out of 63); Kühner et al., 2007) * owning a smartphone * signing the informed consent form Exclusion Criteria: * first session for outpatient psychotherapy is scheduled within four weeks * suicidal ideation (values \> 2 in BDI item 9) * presence of manic symptoms (Mood Disorder Questionnaire (MDQ) score \> 7), - shift work * age below 18 or above 70

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