This research was designed to accomplish five goals: (1) to explore the sexual dimensions of person description, (2) to evaluate the psychometric properties of scales derived from the lexicon of sexuality, (3) to detail the links between the sexual lexicon and the five dimensions uncovered by previous lexical researchers, (4) to examine whether additional dimensions beyond the Big Five are need...

Sexual dimorphisms in the brain underlie behavioral sex differences, but the function of individual sexually dimorphic neuronal populations is poorly understood. Neuronal sexual dimorphisms typically represent quantitative differences in cell number, gene expression, or other features, and it is unknown whether these dimorphisms control sex-typical behavior exclusively in one sex or in both sex...

To understand host-parasite interactions, it is necessary to quantify variation and covariation in defence traits. We quantified parasite resistance and fitness tolerance of a polymorphic damselfly (Ischnura elegans), an insect with three discrete female colour morphs but with monomorphic males. We quantified sex and morph differences in parasite resistance (prevalence and intensity of water mi...

Studies have found that more men than women endorse sexual infidelity as more distressing than emotional infidelity, whereas more women than men endorse emotional infidelity as more distressing than sexual infidelity. Some evolutionary psychologists have proposed that this sex difference can be best conceptualized as reflecting evolution-based differences in parental investment that produce a n...

This is the first study to examine language use and sexual self-schemas in natural language data extracted from posts to a large online forum. Recently, two studies applied advanced text analysis techniques to examine differences in language use and sexual self-schemas between women with and without a history of childhood sexual abuse. The aim of the current study was to test the ecological val...

Little is known about the impact of the relational context of adolescent sexual activity on depressive symptoms. The present study examined trajectories of depressive symptoms among 6,602 adolescents (44% male, 60% White) taken from a nationally representative study (Add Health). Sexually active youth in romantic and casual relationships were first compared to virgins and then to each other by ...

Physiological responses to abiotic stress in plants exhibit sexual differences. Females usually experience greater negative effects than males; however, little is known about the molecular mechanisms of sexual differences in abiotic stress responses. In the present study, transcriptional responses to salinity treatments were compared between male and female individuals of the poplar Populus yun...

The interrelationships between body size, sexual differences and growth rates of European grass snakes were studied. Two-factor analysis of variance and covariance were used in the analysis of the relationships. Results indicate that prey availability causes the marked differences in adult body sizes and the degree of sexual size dimporphism among populations of grass snakes without any genetic...

Because age and sex constitute the only distinct anatomical and physiological morphs (types) of the human species, universal sex differences ought to be expected. According to Darwinian theory, the most numerous sex differences are likely to be found in the domains of sexuality and reproduction. We first briefly review the basic model of the adaptationist program of modern Darwinian psychology....

BACKGROUND This paper reports on some factors correlated with sexual satisfaction and on differences between female and male university students. SUBJECTS AND METHODS A convenience sample of 174 female and 74 male Slovene undergraduate university students was studied. RESULTS It has been found that an increased frequency of sexual interaction and agreeableness in sexual interactions increas...