ABSTRACT
OBJECTIVE: Although relationship distress is strongly associated with mental health problems, poorer social functioning and lower quality of life, only a minority of distressed couples engage in effective couples therapy. Common barriers are the financial burden, fear of being stigmatized, long waitlists and logistical concerns, such as the difficulty in scheduling appointments. Therefore, more accessible help for relationship distress is needed, such as internet-based interventions. METHOD: This study evaluates the efficacy of the German web-based PaarBalance program, an 18-sessions online program for couples and individuals in an intimate relationship. Participants with relationship distress recruited via the internet had access to the unguided self-help program for twelve weeks. A total of 117 individuals (N = 60 participated as couples, N = 57 participated without a partner) were randomly assigned to begin the intervention immediately or to a 12-week waitlist control group. The primary outcome was relationship satisfaction. Secondary outcomes included symptoms of depression and anxiety. RESULTS: The intervention group showed significant improvement in relationship satisfaction (Cohen's d =0.77) compared with the waitlist control group. Small to medium effect sizes in favor of the intervention group, but no statistically significant differences were found regarding depression (d = 0.43) and anxiety (d = 0.45). CONCLUSION: PaarBalance seems to be an effective self-guided intervention to improve relationship satisfaction in people with relationship problems.