OBJECTIVE To assess masturbation prevalence, frequency, and associations with partnered sexual behaviors. DESIGN Cross-sectional survey. SETTING The United States of America. PARTICIPANTS Nationally representative samples of adolescents aged 14 to 17 years. MAIN OUTCOME MEASURES Solo masturbation, partnered sexual behaviors, and condom use. RESULTS Across age groups, more males (73.8%...

The first case of video-polysomnography (vPSG) documented sleep masturbation in a male is reported, and the second reported case of shift work induced sexsomnia. A 20 y.o. soldier with childhood sleepwalking (SW) developed sleep masturbation and SW triggered by military shift work. vPSG documented two episodes of sleep masturbation from N2 sleep in the fourth sleep cycle and from N3 sleep durin...

.................................................................................................................................................... 3 Introduction .............................................................................................................................................. 3 Demographic and Social Patterns in Previous Masturbation Estimates ........................

proper collections of human ejaculates are necessary for semen analysis and infertility treatment purposes. the objective of this study was to assess the seminal characteristics of ejaculates collected by patients via masturbation and coitus interruptus. thirty individuals produced one sample via masturbation and one via incomplete coitus during a 3-days interval. the semen parameters were comp...

Male and female nonhuman primates from all living major radiations are known to performautosexual behaviors (masturbation) implying that masturbation is a facet of our own hominidancestor's sexual repertoire. At a proximate level masturbation satisfies sexual desires leadingto a hormonal state of relaxation and reduced aggression in both sexes. This might be ofimportance abo...

Masturbation is a common sexual practice with significant variations in reported incidence between men and women. The goal of this study was to explore (a) the age at initiation and frequency of masturbation, (b) the associations of masturbation with diverse variables, (c) the reported reasons for masturbating and associated emotions, and (d) the relation between frequency of masturbation and d...

Despite efforts to identify masturbation as a strategy to improve sexual health, promote relational intimacy, and reduce unwanted pregnancy, STIs, and HIV transmission, masturbation as a context for healthy sexual development has been met with silence or trepidation in the scientific and educational communities. Relegated to the realm of commercial media, rather than rational discourse in famil...

The adaptive function of male masturbation is still poorly understood, despite its high prevalence in humans and other animals. In non-human primates, male masturbation is most frequent among anthropoid monkeys and apes living in multimale-multifemale groups with a promiscuous mating system. In these species, male masturbation may be a non-functional by-product of high sexual arousal or be adap...

INTRODUCTION Spontaneous erection accompanied by an activity thought to be and referred to as masturbation occurs in stallions. Spontaneous erection involves extension of the penis from the prepuce with engorgement to its full length and rigidity, in a solitary, rather than heterosexual, context. The activity known as masturbation involves rhythmic bouncing, pressing, or sliding of the erect pe...

The efficacy o f directed masturbation as an adjunct to the treatment o f primary orgasmic dysfunction was evaluated. The directed masturbation procedure consisted o f a gradual series o f assignments that were to be practiced by the patient. The test o f the effectiveness o f directed masturbation was conducted with three couples who had not benefited from a sexual treatment program modeled af...