Twin data and the results generated by research are driven by the behavioral and physical attributes of twin participants. However, many investigators working with twin data have limited personal contact with actual twin-pairs. This situation may be limiting with respect to interpretation of results and formulation of new hypotheses. In an attempt to rectify this issue, key aspects of the interconnected lives of co-twins in three monozygotic male twin-pairs are presented. The section that follows includes a review of twin research on Kleine–Levin syndrome, political discussion, twin relationship quality and urinary cortisol level, and guidelines for determining sample sizes. The final part of this report presents twin-related news items relating to twins’ same day deliveries, death of a twin Holocaust survivor, the Vindman twins, a twin festival in France and the tiniest twins on record.

中文翻译：

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双胞胎数据：推动研究结果的生活/双胞胎研究评论：克莱恩-莱文综合征的双胞胎一致性；政治讨论双研究；双胞胎关系质量和尿皮质醇水平；双胞胎研究指南/新闻中：双胞胎的当天交付；双胞胎大屠杀幸存者的死亡；同卵温德曼双胞胎；法国双胞胎节；最小的双胞胎

双胞胎数据和研究产生的结果是由双胞胎参与者的行为和身体属性驱动的。然而，许多处理双胞胎数据的研究人员与实际双胞胎的个人接触有限。这种情况可能会限制对结果的解释和新假设的制定。为了纠正这个问题，我们介绍了三对同卵男性双胞胎中同卵双胞胎相互关联的生活的关键方面。以下部分包括对 Kleine-Levin 综合征双胞胎研究的回顾、政治讨论、双胞胎关系质量和尿皮质醇水平，以及确定样本量的指南。本报告的最后部分介绍了与双胞胎在同一天分娩、双胞胎大屠杀幸存者文德曼双胞胎的死亡有关的双胞胎相关新闻，