This paper used an evidence and gap map (EGM) to advance the scientific understanding of sibling relationship quality among children aged 2 to 18 years by synthesizing literature on 277 empirical studies from 1985 to 2022 to delineate patterns of study design, sampling, and measurement. Most existing research has utilized majority of White, middle-to-upper class, and/or two-caregiver family samples. Nearly 85% (n = 235) of studies used quantitative methods to measure sibling relationship quality across eight domains: conflict, warmth/affection, quality, cohesion, hostility, power/control, positive engagement, and conflict management. A total of 122 studies used a measure of sibling relationship quality as a predictor of sibling behavior, social, psychological, cognitive, health, or physiological outcomes. Future directions for research are discussed.

中文翻译：

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阐明兄弟姐妹关系质量的景观：证据和差距图

本文利用证据与差距图 (EGM) 综合了 1985 年至 2022 年 277 项实证研究的文献，描绘了研究设计、抽样和测量的模式，以推进对 2 至 18 岁儿童兄弟姐妹关系质量的科学理解。大多数现有研究都利用了大部分白人、中上层阶级和/或两名看护者家庭样本。近 85% ( n  = 235) 的研究使用定量方法来衡量八个领域的兄弟姐妹关系质量：冲突、温暖/感情、质量、凝聚力、敌意、权力/控制、积极参与和冲突管理。共有 122 项研究使用兄弟姐妹关系质量的衡量标准作为兄弟姐妹行为、社会、心理、认知、健康或生理结果的预测指标。讨论了未来的研究方向。