Therapy Online Plus (TOP+) - Comparing Two Online Interventions for Dealing With Challenging Life Circumstances

Change on Patient Health Questionnaire-9 (PHQ-9) over multiple time points

Kroenke, Spitzer, \& Williams, 2001; Internationally used self-report for screening, diagnosing, monitoring and measuring the severity of depression \[9 items, 4-point scale ("not at all" to "nearly every day")\]. It is the major depressive disorder module of the full PHQ.

Time frame: Baseline, then after six weeks and after twelve weeks

Change on Witten Resource Questionnaire (WIRF) over multiple time points

Schürmann et al., 2019; Self-report of personal and external resources \[37 items, 6-point Likert scale ("strongly disagree" to "strongly agree")\]. Resources are measured in the three contexts: "everyday life", "crises well coped with" and "current problems" each including three subscales (action regulation, relaxation and social support).

Time frame: Change from Baseline, then after six weeks and after twelve weeks

Change on Rosenberg-Self-Esteem Scale (RSES) over multiple time points

Ferring \& Filipp, 1996; Self-report of general self-esteem \[10 items, 4-point scale ("strongly disagree" to "strongly agree")\]. A total score will be computed with summed item scores (range: 0-30).

Time frame: Change from Baseline, then after six weeks and after twelve weeks

Change on Connor-Davidson Resilience Scale (CD-RISC-10) over multiple time points

Sarubin et al., 2015; Internationally used self-report of individual resilience \[short version: 10 items, each rated on a 5-point scale (0-4), with higher scores reflecting stronger resilience\]. A total score will be computed with averaged item scores.

Time frame: Change from Baseline, then after six weeks and after twelve weeks

Change on Self-assessment of Emotion Regulation Skills (Selbsteinschätzung emotionaler Kompetenzen; SEK-27) over multiple time points

Berking \& Znoj, 2008; Self-Report Measure for the Assessment of Emotion Regulation Skills \[27 items, 9 subscales, 5-point Likert scale ("not at all" to "always")\].

Time frame: Change from Baseline, then after six weeks and after twelve weeks

Change on Self-Compassion Scale (SCS-D) over multiple time points

Neff, 2003; Internationally used self-report of of self-compassion \[26 items, 6 subscales, 5-point scale ("almost never" to "almost always")\]. Participants will be asked to rate the items according to how often they behave in the stated manner towards themselves in difficult times.

Time frame: Change from Baseline, then after six weeks and after twelve weeks

Change on Working Alliance Inventory (WAI) between two time points

Wilmers et al., 2008; Internationally used self-report of therapeutic alliance measuring bond, goals and tasks in psychotherapy based on feedback of patients concerning the current therapy session \[online version: 12 items, 5-point Likert scale ("rarely or never" to "always")\].

Time frame: Change from six weeks after treatment to twelve weeks after

Change on Questionnaire Assessing the Acceptance of Unpleasant and Pleasant Emotions (Fragebogen zur Akzeptanz von Gefühlen; FrAGe) over multiple time points

Beblo et al., 2011; Self-report of the acceptance and supression of unpleasant and unpleasant emotions \[32 items, 2 subscales: Pleasant and Unpleasant emotions, 6-point scale ("strongly disagree" to "strongly agree")\].

Time frame: Change from Baseline, then after six weeks and after twelve weeks

Change on Positive and Negative Affect Schedule (PANAS) over multiple time points

Watson, Clark, \& Tellegen, 1988; Internationally used self-report of positive and negative affect \[10 items, 5-point scale ("very slightly or not at all" to "extremely")\]. Participants will be asked to rate the items according to how they feel "in the current moment". The PANAS includes two subscales of global positive affect (ten items, range: 1-5) and global negative affect (10 items, range: 1-5). Only the subscale of global positive affect will be used. Subscale scores are computed with averaged item scores.

Time frame: At the beginning of every subpart of the intervention, every week up to 5 weeks