Blake J, Del Pinal J H
Demography. 1981 Aug;18(3):309-20.
Although disapproval of all justifications for abortion is rare in the United States, our analysis of numerous surveys taken in the 1960s and 1970s shows that support for the full prochoice platform is also rare. This means that respondents who endorse some justifications for abortion and reject others typically constitute about 50 percent of these samples. If forced to choose politically between polar positions, would these people be more likely to side with a positive or a negative extreme? Using Multiple Classification Analysis as a form of discriminant analysis, we examine whether people who appear to form a "middle" group actually are closer in their characteristics to those who are positive, or to those who are negative. Finally, we test to see whether those respondents who endorse all four justifications for abortion (health, child defect, financial stress, and elective abortion) also endorse additional prochoice positions, such as government payments for abortion, abortion without the husband's or the parent's consent, and abortion after the first trimester.
尽管在美国，对堕胎所有理由都持反对态度的情况很少见，但我们对20世纪60年代和70年代进行的大量调查分析表明，完全支持堕胎选择派纲领的情况也很少见。这意味着，那些认可某些堕胎理由而拒绝其他理由的受访者通常占这些样本的50%左右。如果在政治上被迫在两极立场之间做出选择，这些人更有可能站在积极极端还是消极极端一边呢？我们使用多重分类分析作为判别分析的一种形式，来检验那些看似形成“中间”群体的人在特征上是否实际上更接近支持堕胎的人，还是更接近反对堕胎的人。最后，我们测试那些认可堕胎所有四个理由（健康、胎儿缺陷、经济压力和选择性堕胎）的受访者是否也认可其他支持堕胎选择的立场，比如政府支付堕胎费用、未经丈夫或父母同意进行堕胎以及怀孕头三个月后进行堕胎。
