The last decades experienced a rapid growth in the number of studies examining the effects of psychological interventions on well-being, yet well-being is often conceptualized and measured in different ways in these studies. Previous meta-analyses included studies with a plethora of different well-being instruments, which provides an ambiguous picture of the effectiveness. Furthermore, prior meta-analyses mainly included specific types of psychological interventions. The goal of the current study was to synthesize the effectiveness of psychological interventions in improving well-being as measured with one consistent and comprehensive well-being instrument, the Mental Health Continuum (MHC). The literature was searched for RCTs examining the effect of psychological interventions in both clinical and non-clinical populations that used the MHC as outcome. 46 RCTs (N = 7,618) and 64 comparisons were analyzed using 3-level meta-analysis models. When compared with non-active control groups, small significant effects were found for total well-being at posttest (β = 0.25), and for the subscales emotional (β = 0.27), social (β = 0.25), and psychological well-being (β = 0.30). Effects were smaller but still significant at follow-up. Subgroup analyses yielded significantly stronger effects for guided compared with non-guided interventions and for studies with good quality. Effects were similar for clinical and non-clinical populations and specific types of interventions. Mindfulness and ACT interventions significantly improved well-being. These findings suggest that psychological interventions can improve well-being, and that different interventions have the potential to improve well-being. Effects also seem to be independent of other factors, including delivery mode, format or target group.

在过去的几十年中，研究心理干预对幸福感的影响的研究数量迅速增长，但在这些研究中，幸福感通常以不同的方式被概念化和衡量。以前的荟萃分析包括使用大量不同福利工具的研究，这提供了关于有效性的模棱两可的画面。此外，先前的荟萃分析主要包括特定类型的心理干预。本研究的目的是综合心理干预在改善幸福感方面的有效性，这是通过一种一致而全面的幸福感工具——心理健康连续体 (MHC) 来衡量的。在文献中搜索了用于检验心理干预对使用 MHC 作为结果的临床和非临床人群的影响的 RCT。46 项随机对照试验（ñ = 7,618）和 64 个比较使用 3 级荟萃分析模型进行了分析。与非活动对照组相比，后测总幸福感（β = 0.25）以及情绪（β = 0.27）、社交（β = 0.25）和心理幸福感等分量表的影响较小(β = 0.30)。效果较小，但在随访中仍然显着。与非指导干预和高质量研究相比，亚组分析对指导干预产生了显着更强的影响。对于临床和非临床人群以及特定类型的干预措施，效果相似。正念和 ACT 干预显着改善了幸福感。这些发现表明，心理干预可以改善幸福感，并且不同的干预措施有可能改善幸福感。