Morris-Yates A, Andrews G, Howie P, Henderson S
Clinical Research Unit for Anxiety Disorders, University of New South Wales, St. Vincent's Hospital, Sydney, Australia.
Acta Psychiatr Scand. 1990 Apr;81(4):322-6. doi: 10.1111/j.1600-0447.1990.tb05457.x.
We asked a sample of 343 adult same-sex twin pairs a number of questions about the similarity of their social environment during childhood and early adolescence. A factor analysis of their responses indicated that their common environment was derived from two sources, one being similar treatment "imposed" upon them by their parents, the other being "elicited" by the twins' similar interests and behavior. Monozygotic (MZ) twins reported experiencing more similar "imposed" and "elicited" environments than dizygotic (DZ) twins. The extent of imposed similar treatment received during childhood and early adolescence was unrelated to either MZ or DZ twins' current behavioral similarity, as indicated by absolute intrapair differences in their Neuroticism, Anxiety, and Depression scores. Similar treatment imposed upon MZ twins on the basis of their zygosity alone is therefore not a threat to the validity of the twin method.
我们向343对成年同性双胞胎样本询问了一系列关于他们童年和青春期早期社会环境相似性的问题。对他们回答的因素分析表明，他们的共同环境来自两个来源，一个是父母“施加”给他们的相似对待，另一个是双胞胎相似的兴趣和行为“引发”的。同卵双胞胎（MZ）报告称，他们经历的“施加”和“引发”环境比异卵双胞胎（DZ）更相似。童年和青春期早期所接受的施加相似对待的程度与MZ或DZ双胞胎当前的行为相似性无关，这一点通过他们神经质、焦虑和抑郁得分的绝对双胞胎内差异得以体现。因此，仅基于同卵双胞胎的合子性而施加的相似对待对双胞胎研究方法的有效性并不构成威胁。
