Harper J
J Autism Child Schizophr. 1975 Mar;5(1):25-36. doi: 10.1007/BF01537970.
A retrospective study of 131 autistic children was made in which 2 groups, Natal and Acquired, were defined on the bases of age at onset and type of onset. Prenatal and perinatal variables were found to be significantly related to Natal onset, whereas in the Acquired group the significant variables were those occurring in early childhood, between years 1 and 3. Follow-up data on intellectual functioning and language development indicated a better prognosis for the Acquired group. An inability to cope with stress is postulated as an underlying feature in both instances, present from birth in the Natal group and occurring in the face of developmental stresses in the Acquired group.
对131名自闭症儿童进行了一项回顾性研究，根据发病年龄和发病类型将其分为两组，即先天组和后天组。研究发现，产前和围产期变量与先天组发病显著相关，而后天组的显著变量是发生在1至3岁幼儿期的因素。关于智力功能和语言发展的随访数据表明，后天组的预后较好。推测无法应对压力是两组的一个潜在特征，在先天组中从出生就存在，在后天组中则是面对发育压力时出现。
