阉割对性行为的后果是什么？

成人期的阉割
在成年期，阉割的后果与青春期是不同的：尽管被阉割者不能生育，但是他的性能力、性动机和性行为实施能力并不会必然地丧失。最后，他将在相当程度上经历逐渐丧失这些能力的过程；但是，在性心理和性的社会交往方面，他可能仍然能够将他早期的性体验（sexual scripts）付诸于行动之中。因为患睾丸癌和其他疾病，在成年期切除睾丸则是必要的。

对性侵犯者进行的阉割
经由法律授权，阉割有时也是合法的，它被用来对付那些性侵犯者。最近几年里，对付性侵犯者的外科阉割日益被称之为化学或激素阉割所替代。像去乙酰环丙氯地孕酮醋酸盐的物质被用来抑制性腺激素的分泌。当然，停止使用这种抑制剂，这种类型的“阉割”则会逆转。

What are the effects of castration on sexual behavior?

Castration in adulthood 
In an adult, castration has a different effect: He also becomes infertile, but his sexual capacity, motivation, and performance do not necessarily come to an immediate end. In the long run, he will experience a considerable reduction in all of these areas, but on the psychosocial level he may still be able to act out some of his earlier sexual scripts. A castration in adults can become necessary because of testicular cancer and other diseases.

Castration of sex offenders
Castration has sometimes also been authorized by the legal authorities to be applied to violant sex offenders. In recent years, the surgical castration of sex offenders has increasingly been replaced by the so-called chemical or hormonal castration. Substances like cyproterone acetate are used to suppress the gonadal hormone production. This kind of 'castration' is, of course, reversible by discontinuing the treatment.