People frequently adopt extra-pair mating strategies, which could be potentially harmful for their legitimate partners. In order to protect themselves from the costs of cheating, people need first to detect infidelity, and for this purpose, they employ specific infidelity-detection strategies. By using a combination of qualitative research methods, we identified 47 acts that people perform in order to detect their partners’ infidelity. Using quantitative methods, we classified these acts into six broader strategies for detecting infidelity. Participants indicated that they were more likely to employ the “Observe changes in her/his behavior,” followed by the “Ask and observe her/his reactions,” and the “Check where she/he is” strategies. Almost 58% of the participants indicated that they would use three or more strategies in order to detect their partners’ infidelity. We also found that higher scorers in Machiavellianism and psychopathy were more likely to employ the identified strategies than lower scorers. In addition, sex and age effects were found for most strategies.

人们经常采用成对配对策略，这可能会对合法伴侣造成伤害。为了保护自己免受欺诈的代价，人们首先需要检测不忠，为此，他们采用了特定的不忠检测策略。通过使用定性研究方法的组合，我们确定了人们为了检测伴侣的不忠行为而执行的47种行为。使用定量方法，我们将这些行为分为六种更广泛的检测不忠行为的策略。参与者表示，他们更有可能采用“观察她/他的行为的变化”，然后是“询问并观察她/他的反应”和“检查她/他在哪里”的策略。几乎58％的参与者表示，他们将使用三种或更多种策略来检测其伴侣的不忠行为。我们还发现，在马基雅维利主义和精神病中得分较高的人比得分较低的人更可能采用已确定的策略。此外，大多数策略都发现了性别和年龄的影响。