ABSTRACT

Purpose

Mirror exposure (ME) is embedded within cognitive behavioral treatment of body image concern (BIC), and existing literature demonstrates its potential value as a BIC intervention. The purpose of the study is to provide a meta-analytic review of ME effects on attitudinal and behavioral BIC.

Methods

Twelve studies met inclusion criteria, yielding six between-group and 18 within-group comparisons.

Results

Random effects models demonstrated a medium effect of ME versus control conditions, on attitudinal BIC, from pre- to immediate posttreatment, small effect at follow-up (1 to 4 weeks posttreatment), and large effect on behavioral BIC pre- to immediate posttreatment. However, small sample sizes yielded nonsignificant findings and significant heterogeneity. Exploratory moderator analyses–ME type, ME dosage (session frequency, duration), and diagnosis–demonstrated that, among single group pre-post designs, higher ME dosage may be instrumental to pre-posttreatment improvements. Consistent with this finding, individual studies with high dosages of ME demonstrated the largest effect sizes. Conclusion: Results may suggest a strong ME effect on BIC at high dosages (>120 minutes). The current review highlights gaps in ME literature and the need for future clinical trials assessing ME, using a priori, high-quality research designs that further the understanding of ME’s mechanisms of change.

中文翻译：

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探索镜子曝光对身体形象结果前后变化的调节作用：系统评价和荟萃分析

摘要

目的

镜子曝光 (ME) 嵌入身体形象关注 (BIC) 的认知行为治疗中，现有文献证明了其作为 BIC 干预的潜在价值。该研究的目的是对 ME 对态度和行为 BIC 的影响进行荟萃分析。

方法

12 项研究符合纳入标准，产生 6 项组间比较和 18 项组内比较。

结果

随机效应模型表明，ME 与对照条件相比，从治疗前到治疗后立即对态度 BIC 有中等影响，在随访（治疗后 1 至 4 周）时影响较小，对治疗前至治疗后立即行为 BIC 影响较大。然而，小样本量产生了不显着的发现和显着的异质性。探索性调节分析——ME 类型、ME 剂量（会话频率、持续时间）和诊断——表明，在单组前后设计中，较高的 ME 剂量可能有助于治疗前的改善。与这一发现一致，高剂量 ME 的个别研究显示出最大的效应量。结论：结果可能表明高剂量（>120 分钟）对 BIC 有强烈的 ME 影响。