Search results for "yksiavioisuus"
showing 4 items of 4 documents
School performance of children from monogamous and polygamous families in Nigeria
2014
Scholastic success of Nigerian children coming from polygamous ( n = 50) and monogamous families ( n = 156) was compared. No differences between the two groups were observed across background variables of demographics, parental education and occupation, or family support for schooling. There were no differences in the Junior Secondary School Entrance Exam scores between the groups. However, children from polygamous families reported more difficulties in mathematics and English than their counterparts from monogamous families. The findings are discussed in relation to previous research.
Sex roles and the evolution of parental care specialization
2019
Males and females are defined by the relative size of their gametes (anisogamy), but secondary sexual dimorphism in fertilization, parental investment and mating competition is widespread and often remarkably stable over evolutionary timescales. Recent theory has clarified the causal connections between anisogamy and the most prevalent differences between the sexes, but deviations from these patterns remain poorly understood. Here, we study how sex differences in parental investment and mating competition coevolve with parental care specialization. Parental investment often consists of two or more distinct activities (e.g. provisioning and defence) and parents may care more efficiently by s…
A mate to die for? A model of conditional monogyny in cannibalistic spiders
2012
Monogynous males in various species actively limit themselves to mating with a single female in their lifetime. Whereas previous models have considered monogyny as an obligate mating strategy, here we explore the potential of monogyny to evolve as a context-specific (conditional) behavior. Using a state-dependent dynamic game model based on the biology of the cannibalistic spider Argiope bruennichi, we confirm that conditional monogyny can evolve under broad conditions, including an even sex ratio. We predict that males should make a terminal investment when mating with large, virgin females, especially if population density is low and the encounter occurs late in the season. We encourage e…
Bisexual desires for more than one gender as a challenge to normative relationship ideals
2018
Normative western understandings of intimate relationships continue to draw upon the discourses of romantic love and the ideal of finding ‘the one’ who meets all our romantic and sexual needs. As desire is not sexually or emotionally exclusive, even people in normative relationships have to make sense of desires beyond the monogamous ideal. Bisexual people engage in these negotiations from a challenging cultural position. As a desire for more than one gender, bisexuality is persistently culturally associated with wavering desire, promiscuity and multiple partners. In light of these cultural conditions, I explore how Finnish bisexual women – and their (ex-)partners of various genders who do …