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Haselton MG, Buss DM, Oubaid V, Angleitner A. Sex, Lies, and Strategic Interference: The Psychology of Deception Between the Sexes. Personality and Social Psychology Bulletin. 2005;31(1):3-23. doi:[10.1177/0146167204271303]A truism in psychology is the best predictor of future behavior is past behavior. This is no less true with sexual behavior. One of the strongest predictors of marital infidelity is one’s number of prior sex partners.
we evaluated the association between infidelity and sexual experience, as prior studies have found that people with more sexual relationships in the past are more likely to have secondary sex partners (Bozon, 1996).
Regarding the correlates of infidelity, results indicated that on the basis of both methods of assessment, the probability of sexual infidelity (a) was greater for Blacks (relative to the remainder of the sample), (b) decreased with higher religiosity, (c) increased with higher number of lifetime sexual partners
Sexual infidelity in a national survey of American women: differences in prevalence and correlates as a function of method of assessment. Mark A. Whisman, Douglas K. Snyder J Fam Psychol. 2007 Jun; 21(2): 147–154. doi: 10.1037/0893-3200.21.2.147
Our findings demonstrate that infidelity and number of sexual partners are both under moderate genetic influence (41% and 38% heritable, respectively) and the genetic correlation between these two traits is strong (47%).
Not surprisingly, the average number of sexual partners was significantly higher among respondents who had been unfaithful compared with those who had remained faithful (7.73 vs. 3.78, p < .001). The phenotypic correlation between these traits was .36 (p < .001).
The resulting genetic correlation between the two traits was .47, so nearly half the genes impacting on infidelity also affect number of sexual partners. The correlation of the unique environment between the two variables was .48.
Genetic influences on female infidelity and number of sexual partners in humans: a linkage and association study of the role of the vasopressin receptor gene (AVPR1A). Lynn F. Cherkas, Elizabeth C. Oelsner, Y. T. Mak, Anna Valdes, Tim D. Spector Twin Res. 2004 Dec; 7(6): 649–658. doi: 10.1375/1369052042663922
In a world where infidelity and promiscuity are increasingly experienced (Brand et al. 2007, Jones and Paulhus 2012), few studies have focused on their emotional and sexual domains. The infidelity and the promiscuity can have an important impact on individuals and on intimate relationships (Silva et al. n.d., Vangelisti and Gerstenberger 2004). For example, the infidelity is one of the most common reasons for divorce and couple therapy (Glass and Wright 1992). In addition, promiscuity is known to have a negative effect on healthy living (Okafor and Duru 2010).
Some authors defend that infidelity may come as a consequence of promiscuity, and that frequently both concepts go side by side (Feldman and Cauffman 1999, Mark et al. 2011). Promiscuity can be understood as the willingness to engage in sexual activities with several partners, have casual sex and get involved in sexual activities sooner rather than later (Jones and Paulhus 2012)
Feldman and Cauffman (1999) analyzed a sample of 417 college students and found that individuals that show permissive behaviors, associated with increased number of sexual partners are more prone to engage in infidelity. Similarly, Barta and Kiene (2005) conducted a study with 432 college students, 120 of whom mentioned past infidelity behaviors. Their results showed that those who have an unrestricted sociosexual orientation tend to report a sexual motive for being unfaithful. Sexual promiscuity was significantly positively correlated with emotional promiscuity [r(356) = .261, p < .001], as well with sexual infidelity [r(323) = .595, p < .001] and emotional infidelity [r(323) = .676, p < .001], indicating that sexually promiscuous participants also tend to be emotionally promiscuous, and sexual[ly] and emotional[ly] unfaithful.
In terms of the sexual domain, results showed that there is also a positive correlation between sexual promiscuity and sexual infidelity, stating that individuals that tend to be more sexually promiscuous also tend to be more sexually unfaithful. These results support our second hypothesis.
Pinto, R., & Arantes, J. (2016). The relationship between sexual and emotional promiscuity and infidelity. ATINER’S Conference Paper Series, No. PSY2016–2087, Athens, Greece.
approximately half of the men and women in the top (withinsex) quintiles of sociosexuality had been sexually unfaithful to a steady partner; this was more than a tenfold increase over the corresponding rate for people in the bottom quintiles. Sexual infidelity is a common cause of divorce cross-culturally (Buss, 1994)
Do individual differences in sociosexuality represent genetic or environmentally contingent strategies? Evidence from the Australian twin registry. J. M. Bailey, K. M. Kirk, G. Zhu, M. P. Dunne, N. G. Martin J Pers Soc Psychol. 2000 Mar; 78(3): 537–545.
Individuals exhibiting sexually permissive attitudes and those who have had a high number of past sexual relationships are more likely to engage in infidelity (Feldman & Cauffman, 1999). In a study of supposedly exclusive dating couples, it was found that individuals exhibiting an ‘unrestricted’ sociosexual orientation (SO) were significantly more likely to pursue extra-pair involvement (Seal, Agostinelli, & Hannett, 1994). Individuals are said to be unrestricted if they score high on the Sociosexual Orientation Index (SOI). Items on this scale include a question tapping whether the respondent feels that love is a prerequisite for sexual relations with a partner, the number of ‘one-night stands’ a respondent has had, and how many partners he or she hopes to have in the next year (Simpson & Gangestad, 1991).
A preliminary ANOVA analysis revealed that individuals reporting a past history of infidelity tended to have a greater number of past sexual partners than those without a history of infidelity
individuals with a history of infidelity, compared with those without, have a relatively unrestricted SO.
Barta, W. D., & Kiene, S. M. (2005). Motivations for infidelity in heterosexual dating couples: The roles of gender, personality differences, and sociosexual orientation. Journal of Social and Personal Relationships, 22(3), 339-360.
TLDR: high body count = bad
PRO TIP : If anyone calls you insecure for caring about a womens bodycount, show them these research and say you're a man of science