of satisfaction in their relationship, in comparison to women that do not orgasm as frequently. Some research has indicated that women who fake orgasm frequently have also been shown to display other mate retention behaviors, which include: Mate guarding (e.g. paying attention to who the partner is spending time with and often checking up on them); Inter-sexual negative inducements (flirting with another individual whilst their partner is looking); Positive inducements (e.g. dressing in a certain manner to impress their partner) Displaying possession signals in public (e.g., kissing a partner in view of other females who are seen as a threat); and, Intra-sexual negative inducements (e.g., displaying aggressive behavior towards another female who is caught looking at their partner). The frequency to which these other forms of mate retention occur is directly related to the risk of infidelity; limited research indicates that once the risk of infidelity is controlled for, the prevalence of other mate retention behaviors are greatly reduced. Fake orgasm has also been shown to function as a mate-retention technique when the female, as opposed to the male, has a higher risk of infidelity. For example, it has been suggested that a main function of female orgasm is to retain the sperm of a favored partner, therefore it is advantageous for men to pay attention to their partners orgasm to ensure they have been selected. Men who are heavily invested in their relationship would experience greater costs in potential cuckoldry and sperm competition. Consequently, in situations where the woman has a perceived high risk of infidelity, men may be especially interested in ensuring their partner attains a copulatory orgasm. Due to this attentiveness, women may fake an orgasm in order to manipulate their level of commitment signalling mate selection to their partner. Commitment manipulation is a mate-retention technique in itself, often displayed by a partner when there is a perceived risk of infidelity. While research has shown that 25 percent of males also display fake orgasms, there is limited research into this area with no current evidence suggesting that men fake an orgasm to retain a mate. The main reasons men gave for faking an orgasm is that they wanted the sex to end as achieving orgasm was unlikely but did not want to hurt the feelings of their partner. A study of orgasms in female humans suggested that most men are quite accurate in knowing whether their partners