MARTINS, Alexandra; PEREIRA, Marco    CANAVARRO, Maria Cristina. Comportamentos extra-diádicos nas relações de namoro: Diferenças de sexo na prevalência e correlatos. []. , 32, 1, pp.45-62. ISSN 0870-8231.  https://doi.org/10.14417/ap.740.

The purpose of the present study was to assess sex differences in prevalence rates and in correlates of offline and online extra-dyadic behaviors (EDB) during dating. The sample consisted of 494 participants (156 men and 338 women) with a mean age of 23.38 years (SD=3.41). The assessment protocol included the following self-report instruments: Extradyadic Behaviors Inventory and Global Measure of Relationship Satisfaction and Global Measure of Sexual Satisfaction. About 63.5% of men and 56.5% of women reported having already been involved in offline EDB and 46.2% of men and 39.3% of women have already been engaged in online EDB, and this difference was not statistically significant. For both sexs, having been unfaithful to a partner and lower relational satisfaction were important predictors of involvement in offline and online EDB. Among men, belonging to the Catholic religion and prior history of the father’s infidelity were significant predictors of the EDB. Among women, the number of sexual partners in the last two years was significantly related with offline EDB. Although men and women are converging in terms of the rates of prevalence, the correlates of engagement in EDB differ according to sex. Suggestions for future research are presented in view of these findings.

: Extra-dyadic behaviours; Sex differences; Prevalence; Dating relationships.

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