Depression, anxiety and eating disorders (“social-emotional disorders”) are common during adolescence/emerging adulthood, periods of intense identity development. Despite this, there are few reviews of existing research on the relationship between symptoms of these disorders and ongoing identity development. This study systematically reviewed, narratively synthesized and meta-analyzed longitudinal investigations of the relationship between identity synthesis/confusion and depression, anxiety and eating disorders symptoms during adolescence/emerging adulthood. Three databases (PsycInfo, Medline, Embase) were searched. Study quality was systematically appraised, findings were qualitatively synthesized and (where possible) meta-analyzed. 20 studies (55% “fair” quality, 45% “poor” quality) were identified, including 13,787 participants (54.2% female, mean age = 14.48 years, range 10–29 years). The narrative synthesis found evidence of bidirectional relationships between identity synthesis/confusion and depression, anxiety and eating disorder symptoms. Meta-analyses and meta-regressions of a sub-sample of studies (N = 9) indicated no significant associations between identity synthesis or confusion and anxiety or depression symptoms. More high-quality research is needed before firm conclusions can be drawn.

抑郁、焦虑和饮食失调（“社交情绪障碍”）在青春期/成年期、强烈的身份发展时期很常见。尽管如此，很少有关于这些疾病症状与持续身份发展之间关系的现有研究的评论。本研究系统回顾、叙述性综合和荟萃分析的身份综合/困惑与青春期/成年期抑郁、焦虑和饮食失调症状之间关系的纵向调查。搜索了三个数据库（PsycInfo、Medline、Embase）。系统地评估研究质量，定性综合研究结果并（在可能的情况下）进行荟萃分析。确定了 20 项研究（55% 质量“一般”，45% 质量“差”），包括 13,787 名参与者（54.2% 女性，平均年龄 = 14.48 岁，范围 10-29 岁）。叙事综合发现了身份综合/困惑与抑郁、焦虑和饮食失调症状之间双向关系的证据。研究子样本的荟萃分析和荟萃回归（N  = 9）表明身份综合或混乱与焦虑或抑郁症状之间没有显着关联。在得出确切结论之前，需要进行更多高质量的研究。