Mirandé A M, Hammer E L
Arch Sex Behav. 1976 Nov;5(6):553-66. doi: 10.1007/BF01541219.
Alternative models of premarital abortion permissiveness (PAP) are tested with a two-state sample of single college women. The first model proposes that number of times in love (Love) leads to coitus (Sex) and that coitus increases premarital sexual permissiveness (PSP), which in turn leads to greater acceptance of abortion (PAP). The second posits a causal path from Love to PSP to Sex to PSP. The data appear to be consistent with a revised third model. The paths between Love and PAP and between Love and PSP are negligible, indicating that the effects of Love on PSP and PAP are mediated by Sex. The revised model suggests that as number of times in love increases so does coital experience and that coitus has both a direct effect on PAP and an indirect effect through PSP.
利用单身女大学生的两阶段样本对婚前堕胎宽容度（PAP）的替代模型进行了测试。第一个模型提出恋爱次数（Love）会导致性交（Sex），而性交会增加婚前性宽容度（PSP），进而导致对堕胎的更大接受度（PAP）。第二个模型假定了一条从恋爱到婚前性宽容度再到性交再到婚前性宽容度的因果路径。数据似乎与一个修订后的第三个模型一致。恋爱与婚前堕胎宽容度之间以及恋爱与婚前性宽容度之间的路径可以忽略不计，这表明恋爱对婚前性宽容度和婚前堕胎宽容度的影响是由性交介导的。修订后的模型表明，随着恋爱次数的增加，性交经历也会增加，并且性交对婚前堕胎宽容度既有直接影响，也通过婚前性宽容度产生间接影响。
