性犯罪者和其它类型的犯罪者不同,心理因素在他们所犯的罪行中占很大的比重。大多数犯罪分子是明知行为违法,但还是去干;而性犯罪者则不完全如此,他们往往在作出各种心理辩护之后,对自己的行为作出合理的解释。因此,对审讯人来说,如果他掌握了嫌疑犯的确凿证据和他所需要的信息,那么,全面了解他们的心理变化,以及精通审讯技巧就十分重要。类似“好人、坏人” Sexual offenders, unlike other types of offenders, make up a large percentage of the crimes they commit. Most criminals knowingly act in violation of the law, but they still go to work. Sex offenders do not do exactly this. They often make reasonable explanations of their actions after making various psychological defenses. It would therefore be very important for the interrogator to have a thorough understanding of their psychological changes and a good knowledge of the interrogation techniques if he had solid evidence of the suspects and the information he needs. Similar to “good person, bad person”