Schachter F F
Fam Process. 1985 Sep;24(3):415-27. doi: 10.1111/j.1545-5300.1985.00415.x.
A four-member family structure consisting of two siblings contrasting in personality (sibling deidentification) and each identified with a different parent (split-parent identification) was recently reported (15). In well-functioning families, this tetrad or quadrangle is wide-spread in the first pair of siblings in the family and tends to be more common in same-sex pairs, suggesting that sibling deidentification is designed to mitigate the relatively intense sibling rivalry characteristic of these pairs and hence to maintain family harmony. In this collated case report, deidentification is found to follow the same pattern in 39 clinic first pairs. However, contrasting attributes are varied and nonevaluative in nonclinic pairs but mainly "good-bad" in clinic pairs, with polarization extreme. Results suggest that nonclinic siblings negotiate their identity (being) much as they negotiate about possessions (having) and that negotiations are blocked in clinic pairs, freezing mythic devil or angel identity. Intervention is directed at dislodging this block.
最近有报道称，一个四口之家的结构由两个性格迥异的兄弟姐妹（兄弟姐妹身份认同分化）以及分别认同不同父母的两人组成（父母认同分裂）(15)。在功能良好的家庭中，这种四人组合或四边形在家庭中的第一对兄弟姐妹中很普遍，并且在同性组合中更常见，这表明兄弟姐妹身份认同分化旨在减轻这些组合中相对激烈的兄弟姐妹竞争，从而维护家庭和谐。在这份整理后的病例报告中，发现身份认同分化在39对临床中的第一对兄弟姐妹中遵循相同模式。然而，在非临床组合中，对比属性各不相同且无评价性，但在临床组合中主要是“好-坏”，两极分化极端。结果表明，非临床的兄弟姐妹在协商他们的身份（存在）时，就如同他们协商财产（拥有）一样，而在临床组合中协商受阻，固化了神话般的魔鬼或天使身份。干预旨在消除这一障碍。
