Gender/Sex Preferences May Moderate the Relationship between Cohabitation and Sibling Incest.

The current study examined the extent to which gender/sex preference moderated the role of cohabitation on incest avoidance in an online sample of 1,623 adults with at least one opposite-sex sibling. Consistent with previous research, we found that longer cohabitation with a sibling was associated with decreased sexual interest in sexual contact between hypothetical siblings. We extended the literature by finding that gender/sex preferences contribute significantly to our understanding of incest avoidance.

Characteristics and risk factors for sibling incest.

Sibling sexual behaviour, despite historical and cross-cultural incest taboos and biologically driven incest avoidance, poses a persistent problem. We tested factors theorized to be associated with sibling incest in a cross-sectional online survey of 1,863 respondents with siblings mainly from North America and Germany. We found that 13% of participants reported engaging in sexual contact with a sibling, typically starting at the age of 10, and that step-siblings and half-siblings were more likely to engage in sibling incest than full siblings.

Men, mindsets and birth: results of a prospective longitudinal study.

Aims/background: In recent years, there has been an increased interested in the contribution of fathers to childbirth. In the present paper we explore whether the father's birth-related mindset (being either more natural or more medical) can predict the mother's labour and birth outcomes and whether the father's experience and evaluation of the birth can predict his psychological well-being after the birth.

Design/methods: We conducted a longitudinal study ( = 304 expecting fathers) spanning the first trimester of pregnancy up to six months after birth.

Partner support and relationship quality as potential resources for childbirth and the transition to parenthood.

Background: The aim of the present paper was to explore the role of partners for the stressful life events of birth and the transition to parenthood.

Methods: In a first prospective longitudinal study (N = 304 dyads) we tested whether relationship quality positively predicted fewer interventions during labor and birth, a more positive birth experience, and better well-being during the first six weeks after birth. In a second study we surveyed mothers (N = 980; retrospective quasi-experimental design) who had given birth during the first lockdown of the COVID-19 pandemic in spring 2020 - some in the absence of their partners - to test the assumption that regardless of relationship quality, the presence of the partner was positively related to low-intervention births and the birth experience.