Selective mutism is a rare childhood anxiety disorder characterized by a consistent failure to speak in certain social situations where speech is expected, despite fluent speech in other situations. The purpose of this meta-analysis was to investigate the efficacy of psychological interventions for selective mutism in randomized controlled trials (RCTs).

中文翻译：

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心理干预对儿童选择性缄默症的疗效：随机对照试验的荟萃分析

选择性缄默症是一种罕见的儿童焦虑症，其特征是在某些需要讲话的社交场合中始终无法讲话，尽管在其他场合讲话流利。这项荟萃分析的目的是在随机对照试验 (RCT) 中调查心理干预对选择性缄默症的疗效。