Minde K, Corter C, Goldberg S, Jeffers D
Department of Psychiatry, McGill University, Montreal, Quebec, Canada.
J Am Acad Child Adolesc Psychiatry. 1990 May;29(3):367-74. doi: 10.1097/00004583-199005000-00006.
This paper describes methods of measuring a preference a mother develops for one twin over the other and describes the effect such preference has on the intellectual functioning and behavior of 24 twin pairs over 4 years. Results indicate that the majority of mothers develops a preference for one premature twin within 2 weeks after birth and maintains this preference for at least 4 years. The preferred twin has fewer behavior problems and a higher IQ at age 4. However, temperament is not correlated with preferential status.
本文描述了测量母亲对双胞胎中一个孩子比对另一个孩子产生偏好的方法，并描述了这种偏好在4年时间里对24对双胞胎的智力功能和行为所产生的影响。结果表明，大多数母亲在孩子出生后两周内就会对早产双胞胎中的一个产生偏好，并将这种偏好维持至少4年。受偏爱的双胞胎在4岁时行为问题较少，智商较高。然而，气质与偏爱状况并无关联。
