Sociosexuality, Morningness–Eveningness, and Sleep Duration

Abstract

Morningness–eveningness is the preference for different times of day for activity and sleep. Here, we addressed the effects of sleep behavior and morningness–eveningness on sociosexuality. Three hundred students ( M age = 22.75 years, with 95% between 18 and 28) participated online, answering questions about morningness–eveningness (rMEQ [Reduced Morningness–Eveningness Questionnaire]), midpoint of sleep on free days (MSF), sleep duration, and the Sociosexuality Orientation Inventory–Revised (SOI-R). The SOI-R contains three subscales, Behavior, Attitude, and Desire. Evening orientation and short sleep duration were related to a higher total SOI-R and to the three subscales. Based on the linear models, the strongest effect on sociosexuality was produced by gender (27% explained variance) while age accounted for 6% of variance. Nonadditive variance explained by sleep–wake behavior was 7% (MSF), 4% (sleep duration), and 4% (rMEQ scores; 3% rMEQ-based typology). Older age was related to less-restricted sociosexuality, and men were less restricted than women in Attitude and Desire. Sleep duration and rMEQ scores were associated with Attitude and Desire; but only MSF was significantly related to Behavior. The data show that sleep–wake variables are associated with sociosexuality, with evening orientation and shorter sleep duration being related to a less-restricted sociosexuality.

Sleep timing is linked to sociosexuality: Evidence from German, Polish, Slovak, and Spanish females

“…evening ones were more present oriented with greater short mating orientation and sexual experience. In line with this, Randler et al (2016b) corroborated the greater contribution of gender (being male) than chronotype (eveningness) in the variance of sociosexuality.…”

“…Recently, evening females were found to be less sociosexually restricted than the morning ones, while the results in males were less consistent (Jankowski et al., 2014b; Randler et al., 2016b). Jankowski et al.…”

Similarity in Chronotype and Preferred Time for Sex and Its Role in Relationship Quality and Sexual Satisfaction

“…Further studies, however, showed that evening preference is associated with a tendency to engage in uncommitted sexual relations also in females. This effect can be observed not only on the behavioral level, but also in desire and positive attitude toward uncommitted sex (Jankowski et al, 2014b ; Randler et al, 2016 ).…”

Inteligencja w codziennym życiu

“…I tak osoby o chronotypach wieczornych częściej reagują złością (Jankowski, Linke, 2020), są mniej sumienne (Tsaousis, 2010), mają bardziej negatywny stosunek do upływu czasu (Pruszczak, Stolarski, Jankowski, 2018), częściej stosują środki psychoaktywne (Senyk, Jankowski, Cholii, 2020). Osoby wieczorne wykazują większy promiskuityzm (Randler, Jankowski, Rahafar, Díaz-Morales, 2016), którego nie można wytłumaczyć ich profilem osobowości (Díaz-Morales i in., 2019). Zgodność chronotypów w związku romantycznym ma znaczenie dla satysfakcji u kobiet (Jocz, Stolarski, Jankowski, 2018), które to preferują mężczyzn o chronotypie bardziej zbliżonym do ich własnego (Randler, Barrenstein, Vollmer, Díaz-Morales, Jankowski, 2014).…”