AIM Assessment of the frequency of subjectively assessed symptoms of sexual dysfunctions and sexual disorders in patients with schizophrenia in comparison with general population results. METHOD The study was anonymous and was conducted on a group of 56 persons with schizophrenia--patients of psychiatric hospital day-wards. A Sexological Questionnaire was used, which was based on the ICD-10 c...

Three adult male sex offenders with developmental disabilities participated in phallometric assessments that involved repeated measures of arousal when exposed to various stimuli. Arousal assessment outcomes were similar to those obtained by Reyes et al. (2006). Additional data-analysis methods provided further information about sexual preferences, thus replicating and extending previous resear...

Several clades of spiders whose females evolved giant sizes are known for extreme sexual behaviors such as sexual cannibalism, opportunistic mating, mate-binding, genital mutilation, plugging, and emasculation. However, these behaviors have only been tested in a handful of size dimorphic spiders. Here, we bring another lineage into the picture by reporting on sexual behavior of Darwin's bark sp...

Introduction: The False Dichotomy 14 Models for Treating Sexual Dysfunction 15 Sex Therapy 15 Medical Treatments for Erectile Dysfunction 17 New Sexual Pharmaceuticals: Success or Failure 18 Success of the New Treatments 18 Barriers to Treatment Success 18 Identifying Psychosocial Barriers to Success 19 Combination Therapy: The Road to Success 21 Combination Therapy: A Brief Relevant History 21...

This study reconsiders the ‘‘double standard of aging’’ hypothesis, which states that older women are judged as being less attractive than older men. We considered the subjects sexual orientation (i.e., heterosexual, gay, lesbian, bisexual) and showed that older women were not judged more negatively than older men per se. Male subjects exhibited a stronger youth bias than females, but only if t...

The recurrent use of child sexual abuse images (CSAI) for sexual arousal is considered a valid indicator for the existence of a pedophilic preference, which in turn represents a significant risk factor for committing contact offenses against children. Treatment programs for (potentially) sexually delinquent men endeavor to reduce the risk to offend by addressing relevant risk factors and emphas...

Three studies (N=329) using U.S. community samples examined the relative contributions of self-reported “sex,” gender identity, and actual number of sexual partners to the question how many sexual partners individuals desire over the lifetime. In Study 1, the more “feminine” a participant identified, not self-reported sex, was significantly related to the desired number of sexual partners. Stud...

The evolution of mating signals and preferences assists speciation by facilitating assortative mating within diverging lineages, thereby closing down conduits of gene flow between lineages. However, sexual communication traits are frequently subject to stabilizing selection, suggesting that new variants will be selected against, thereby discouraging their divergent evolution. Pleiotropic mutati...

Colour is a critical cue for many vital behavioural tasks: material identifi cation, object recognition and social–sexual signalling. Given the importance of the behavioural uses of colour, and the known perceptual and physiological properties of colour vision, it is likely that preference for coloured objects drives preference for colours themselves. The underlying universality in patterns of ...