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May 04 2012
NCBI ROFL: Women’s sexual and emotional responses to male- and female-produced erotica.
“Whether erotic films made by women are more arousing for women than erotic films made by men was studied. Forty-seven subjects were exposed to both a woman-made, female-initiated, and female centered, erotic film excerpt. Photoplethysmographic vaginal pulse amplitude was recorded continuously. Self-report ratings of sexual arousal and affective reactions were collected after each stimulus presentation. Contrary to expectation, genital arousal did not differ between films, although genital response to both films was substantial. Subjective experience of sexual arousal was significantly higher during the woman-made film. The man-made film evoked more feelings of shame, guilt, and aversion. Correlations between subjective experience of sexual arousal and photoplethysmographic measures of sexual arousal were nonsignificant. The largest contribution to female sexual excitement might result from the processing of stimulus-content and stimulus-meaning and not from peripheral vasocongestive feedback.”
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Photo: flickr/rachelkramerbussel.com
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April 20 2012
NCBI ROFL: If you want to sell more alcohol, touch your customers.
The effect of waitresses’ touch on alcohol consumption in dyads.
“A total of 96 men and 48 women participated in a study on the effect of touch in the natural setting of public taverns in the United States. Participants in the same-gender (men-men) or mixed-gender dyads were either touched or not touched by waitress confederates. Regardless of dyad type, participants who were touched consumed more alcohol than participants who were not touched. Men in the mixed-gender dyads consumed more alcohol when the women was touched. Same-gender (men-men) dyads aggregately consumed more alcohol than mixed-gender dyads. The results are interpreted in terms of the environmental cues and the dynamics of the group.”
Photo: flickr/zoonabar
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April 13 2012
NCBI ROFL: The economics of faking orgasms.
The economics of faking ecstasy.
“In this paper, we develop a signaling model of rational lovemaking. In the act of lovemaking, a man and a woman send each other possibly deceptive signals about their true state of ecstasy. For example, if one of the partners is not in ecstasy, then he or she may decide to fake it. The model predicts that (1) a higher cost of faking lowers the probability of faking; (2) middle-aged and old men are more likely to fake than young men; (3) young and old women are more likely to fake than middle-aged women; and (4) love, formally defined as a mixture of altruism and demand for togetherness, increases the likelihood of faking. The predictions are tested with data from the 2000 Orgasm Survey. Besides supporting the model’s predictions, the data also reveal an interesting positive relationship between education and the tendency to fake in both men and women.”
Photo: flickr/greggoconnell
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April 06 2012
NCBI ROFL: Female cockroaches avoid slutty males.
Female mate preference and sexual conflict: females prefer males that have had fewer consorts.
“Different aspects of male quality as a mate can vary independently. When this is the case, females may need to use multiple cues to accurately assess overall mate quality. We examined the pattern of mating preference in the cockroach Nauphoeta cinerea. Sexual conflict occurs in this species because male manipulation of female mating receptivity can result in reduced female fitness. We predicted that since females cannot remate within a single reproductive bout because of male manipulation, females should assess male mating history to avoid mating with males with low fertility caused by sperm exhaustion. In a mate-preference experiment, we found that females discriminated against males who had mated multiple times. Females also discriminated against males who had consorted with several females but had been prevented from mating with those females. Thus, females appeared to be able to detect cues on males that were derived from previous mates and to use this information to avoid mating with sperm-exhausted males. We suggest that females may commonly use multiple cues to assess different aspects of mate quality, especially when male ...
March 30 2012
NCBI ROFL: Factors affecting college students’ perceptions of sexual relationships between high school students and teachers.
“This study explored the effects of respondent gender, gender combination (male teacher/female student versus female teacher/male student), and teacher age (24 versus 39-years-old) on the perception of a sexual relationship between a teacher and a 16-year-old student. Participants were 80 male and 80 female undergraduates. A MANOVA yielded significant main effects for respondent gender and gender combination. Subsequent ANOVAs indicated that men generally viewed the experience more positively and that the male teacher/female student combination was viewed more negatively than the female teacher/male student pairing.”
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March 23 2012
NCBI ROFL: What Mr. Darcy would have done for impotence.
Impotence in the 18th and 19th century: concepts of etiology and approaches to therapy.
“The old word impotence is derived from the Latin word impotencia, which literally translated means “lack of power.” Impotence, in the course of the history, has been attributed to mental pathology, anxiety, or demons or witches. Historically, the pharmacological treatments for impotence started in Greek times, when a myriad of herbal medications were applied locally to the genitals to enhance “sexual strength.” In the 18th century, theories about the main factors inducing impotence saw it as an abnormal state of the fibers, a defect in the solid or liquid substances or a bad structure (tumor, inflammation, abscess, ulcer or foreign body). According to these mechanisms, when impotence depended on the state of the muscular fibers, treatment included a tepid bath and a clyster. In very fat or very weak people, who get particularly tired, it was important to use the remedies able to give energy to the fibers, such as ferrous mineral waters, for a month. Moreover, other suggestions were to ride a horse, to sleep few hours, to breathe good country air, to take a purge every 2 weeks, to ...
March 16 2012
NCBI ROFL: Nifty ways to leave your lover: The tactics people use to entice and disguise the process of human mate poaching.
“Although a number of studies have explored the ways that men and women romantically attract mates, almost no research exists on the special tactics people use when already in a relationship and trying to attract someone new–a process known as mate poaching enticement. In Study 1, the authors investigated the tactics people use to entice others into making mate poaching attempts. Enticement tactic effectiveness conformed to evolutionary-predicted patterns across sex and temporal context. In Study 2, the authors examined the tactics men and women use to disguise mate poaching enticement. The most effective camouflage for poaching also varied between sex in evolutionary-predicted ways, regardless of the target of deception (i.e., current partner vs. larger community). Discussion focuses on limitations of this research, future investigative directions, unexpected findings, and the utility of placing mate poaching attraction within the broader context of human sexual strategies.”
Bonus table from the full text:
Photo: flickr/denharsh
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March 10 2012
NCBI ROFL: Dangerous liaison: sexually transmitted allergic reaction to Brazil nuts.
“Brazil nuts are the second most frequent cause of nut allergy in the United Kingdom. We report the case of a 20-year-old woman with documented Brazil nut allergy who developed widespread urticaria and mild dyspnea after intercourse with her boyfriend who had earlier consumed Brazil nuts. Skin prick testing with the boyfriend’s semen after Brazil nut consumption confirmed significant reactivity whereas a sample before nut consumption was negative. We believe this to be the first case of a sexually transmitted allergic reaction.”
Photo: flickr/JorgeBRAZIL
Thanks to Per K. for today’s ROFL!
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March 03 2012
NCBI ROFL: Penile fracture seems more likely during sex under stressful situations.
“INTRODUCTION: The unusual event of penile fracture occurs when there is a disruption of the tunica albuginea surrounding engorged erectile tissue during aggressive sexual behavior. There is often an audible crack and rapid detumescence with subcutaneous hemorrhage that follows.
AIMS:
Medical literature has described the etiology and treatment of penile fracture. We report the remarkably unusual social situations of a series of patients who sustained this unique injury.
METHODS:
We conducted a retrospective chart review of 16 patients whose injury was severe enough to require surgical repair at the University of Maryland between 2007 and 2011. Particular attention was paid to the intake interview in the emergency department and the postoperative chart notes by the attending urologist to ascertain out-of-the-ordinary social situations in which the injury was sustained.
MAIN OUTCOME MEASURES:
The occurrence of penile fracture is sufficiently rare that the author was able to interact personally with most of the patients. The patients were remarkably forthcoming with the personal social dynamics of the sexual encounter.
RESULTS:
Half of these penile fracture patients sustained the injury during an extramarital affair. Only three patients sustained the injury in a bedroom; ...
February 25 2012
NCBI ROFL: College hookup SMACKDOWN: Extroverts vs. Introverts!
Personality as a predictor of hooking up among college students.
“Hookups–casual sexual encounters that may or may not include intercourse – are common on college campuses. Previous research has suggested that these casual sexual encounters may have serious health-related consequences. Understanding the relationships among multiple predictors of hooking up is important if high-risk prevention programming among college students is to be effective. This study considers each of the Big Five personality traits as predictors of hooking-up behaviors in a sample of Midwestern undergraduates (N = 247). Fifty-six percent of women and 63% of men reported engaging in a hookup. In general, Extraversion was positively associated with hooking up behaviors; Conscientiousness was negatively associated with hooking up. Relationships between personality and hooking up were significant while controlling for alcohol use. Implications for prevention programming on college campuses are discussed.”
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February 18 2012
NCBI ROFL: Sexualization of the female foot as a response to sexually transmitted epidemics: a preliminary study.
“The authors reviewed historical literature and hypothesized a relationship between epidemics of sexually transmitted diseases and foot fetishism. They tested this hypothesis by quantifying foot-fetish depictions in the mass-circulation pornographic literature during a 30-yr. interval. An exponential increase was noted during the period of the current AIDS epidemic. The authors offer reasons for this possible relationship.”
Bonus excerpts from the main text:
Introduction
“During the current millenium, there have been four major epidemics of sexually transmitted disease as noted by contemporaries. In the Western World there was an apparent gonorrhea epidemic in the Thirteenth Century, syphilis epidemics in the Sixteenth and Nineteenth Centuries, and AIDS in the current century (Moodle, 1923; Long, 1929; Bayon, 1990). During each of those periods there seemed to emerge a sexual focus on the female foot. This focus apparently coincided with each of the first three epidemics and disappeared with the epidemic’s subsidence, usually after 30-60 years (Mc- Kmney, 1965; Windle, 1992). This focus on feet was unique to each of these epidemic periods. During all other periods, eroticism was attached to breasts, buttocks, and thighs. Biblical, Egyptian, and Classical art and literature focused on these ...
February 11 2012
NCBI ROFL: The clinical value of boredom. A procedure for reducing inappropriate sexual interests.
“A combination of aversive therapy and orgasmic reconditioning failed to produce the expected changes in sexual activities and arousal patterns. A procedure that involved verbalizing deviant fantasies while engaged in continual masturbation for nine sessions each of 1 1/2 hours duration, led to marked changes in sexual interests in an appropriate direction.”
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Photo: flickr/candid
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January 28 2012
NCBI ROFL: Probably the most horrifying scientific lecture ever.
How (not) to communicate new scientific information: a memoir of the famous brindley lecture
“In 1983, at the Urodynamics Society meeting in Las Vegas, Professor G.S. Brindley first announced to the world his experiments on self-injection with papaverine to induce a penile erection. This was the first time that an effective medical therapy for erectile dysfunction (ED) was described, and was a historic development in the management of ED. The way in which this information was first reported was completely unique and memorable, and provides an interesting context for the development of therapies for ED. I was present at this extraordinary lecture, and the details are worth sharing. Although this lecture was given more than 20 years ago, the details have remained fresh in my mind, for reasons which will become obvious.
The lecture, which had an innocuous title along the lines of ‘Vaso-active therapy for erectile dysfunction’ was scheduled as an evening lecture of the Urodynamics Society in the hotel in which I was staying. I was a senior resident, hungry for knowledge, and at the AUA I went to every lecture that I could. About 15 min before the lecture I took the elevator to go ...
January 21 2012
NCBI ROFL: The best men are (not always) already taken: female preference for single versus attached males depends on conception risk.
“Because men of higher genetic quality tend to be poorer partners and parents than men of lower genetic quality, women may profit from securing a stable investment from the latter, while obtaining good genes via extrapair mating with the former. Only if conception occurs, however, do the evolutionary benefits of such a strategy overcome its costs. Accordingly, we predicted that (a) partnered women should prefer attached men, because such men are more likely than single men to have pair-bonding qualities, and hence to be good replacement partners, and (b) this inclination should reverse when fertility rises, because attached men are less available for impromptu sex than single men. In this study, 208 women rated the attractiveness of men described as single or attached. As predicted, partnered women favored attached men at the low-fertility phases of the menstrual cycle, but preferred single men (if masculine, i.e., advertising good genetic quality) when conception risk was high.”
Photo: Flickr/MikeCrane83
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January 13 2012
NCBI ROFL: Sexual attitudes as correlates of sexual details in human figure drawing.
“The hypothesis that sexual attitudes, as measured by the Sexual Opinion Survey, are related to the explicitness with which nude figures are drawn was examined. The presence or absence of various sexual and nonsexual anatomical features, as well as length and width measurements, were assessed in the drawing of nudes by 17 male and 23 female undergraduates. Individuals with relatively positive sexual attitudes (erotophiles), as compared with individuals with relatively negative attitudes (erotophobes), were more likely to include such details as a glans, a urinary meatus, and chest hair on male figures and pubic hair and nipples on female figures. Positive sexual attitudes were also associated with drawing figures with longer and wider penises, breasts, testicles, and mons. Relationships between sexual attitudes and the drawing of nonsexual body parts were generally not significant. The results are discussed in terms of the pervasive generality of sexual attitudes in influencing quite varied sex-related behaviors.”
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Photo: flickr/quinn.anya
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January 06 2012
NCBI ROFL: Surprise! A lower pitched voice doesn’t mean better semen.
Low Pitched Voices Are Perceived as Masculine and Attractive but Do They Predict Semen Quality in Men?
“Women find masculinity in men’s faces, bodies, and voices attractive, and women’s preferences for men’s masculine features are thought to be biological adaptations for finding a high quality mate. Fertility is an important aspect of mate quality. Here we test the phenotype-linked fertility hypothesis, which proposes that male secondary sexual characters are positively related to semen quality, allowing females to obtain direct benefits from mate choice. Specifically, we examined women’s preferences for men’s voice pitch, and its relationship with men’s semen quality. Consistent with previous voice research, women judged lower pitched voices as more masculine and more attractive. However men with lower pitched voices did not have better semen quality. On the contrary, men whose voices were rated as more attractive tended to have lower concentrations of sperm in their ejaculate. These data are more consistent with a trade off between sperm production and male investment in competing for and attracting females, than with the phenotype-linked fertility hypothesis.”
Photo: flickr/Alan Light
Thanks to bboybutzemann for today’s ROFL!
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December 24 2011
NCBI ROFL: Psychosexual study of communist era Hungarian twins.
“Our aim in this study is to describe the characteristics of sexual development in twins and estimate the role of heritability and environmental factors as causes of certain sexual disorders. Two hundred and ten adult same-sex twin pairs (92 monozygotic [MZ] female, 41 MZ male, 55 dizygotic [DZ] female and 22 DZ male pairs) were involved in the study. Data were collected in 1982 by self-administered questionnaires that included items on sexual maturation, sexual life, contraception, mutual sexual activity within twin pairs and alcohol use. The ratio of married to unmarried twins was nearly the same in MZs and DZs, with the exception that the divorce rate was higher in MZ female twins (14%), and DZ and male twins were slightly more likely to be single. Menarche was later in twins compared to non-twin Hungarian women. 57% of MZs experienced menarche within 3 months of each other, 77% within 6 months while it occurred for 30% and 43% respectively in DZs. The first seminal emission indicated some delay in male twins compared with the Hungarian general population sample. MZ first kisses occurred later than DZ’s first kisses. The same was true for the first petting, masturbation ...
December 17 2011
NCBI ROFL: If I’m not hot, are you hot or not? Physical attractiveness evaluations and dating preferences as a function of one’s own attractiveness.
“Prior research has established that people’s own physical attractiveness affects their selection of romantic partners. This article provides further support for this effect and also examines a different, yet related, question: When less attractive people accept less attractive dates, do they persuade themselves that the people they choose to date are more physically attractive than others perceive them to be? Our analysis of data from the popular Web site http://HOTorNOT.com suggests that this is not the case: Less attractive people do not delude themselves into thinking that their dates are more physically attractive than others perceive them to be. Furthermore, the results also show that males, compared with females, are less affected by their own attractiveness when choosing whom to date.”
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December 09 2011
NCBI ROFL: Does bestiality cause penile cancer?
Sex with Animals (SWA): Behavioral Characteristics and Possible Association with Penile Cancer. A Multicenter Study
“Introduction. Zoophilia has been known for a long time but, underreported in the medical literature, is likely a risk factor for human urological diseases. Aim. To investigate the behavioral characteristics of sex with animals (SWA) and its associations with penile cancer (PC) in a case-control study. Methods. A questionnaire about personal and sexual habits was completed in interviews of 118 PC patients and 374 controls (healthy men) recruited between 2009 and 2010 from 16 urology and oncology centers. Main Outcome Measures. SWA rates, geographic distribution, duration, frequency, animals involved, and behavioral habits were investigated and used to estimate the odds of SWA as a PC risk factor. Results. SWA was reported by 171 (34.8%) subjects, 44.9% of PC patients and 31.6% of controls (P < 0.008). The mean ages at first and last SWA episode were 13.5 years (standard deviation [SD] 4.4 years) and 17.1 years (SD 5.3 years), respectively. Subjects who reported SWA also reported more venereal diseases (P < 0.001) and sex with prostitutes (P < 0.001), and were more likely to have had more than 10 lifetime sexual partners (P < 0.001) than those who ...
November 26 2011
NCBI ROFL: Squirting vs. gushing.
New Insights from One Case of Female Ejaculation.
“Introduction. Although there are historical records showing its existence for over 2,000 years, the so-called female ejaculation is still a controversial phenomenon. A shared paradigm has been created that includes any fluid expulsion during sexual activities with the name of “female ejaculation.” Aim. To demonstrate that the “real” female ejaculation and the “squirting or gushing” are two different phenomena. Methods. Biochemical studies on female fluids expelled during orgasm. Results. In this case report, we provided new biochemical evidences demonstrating that the clear and abundant fluid that is ejected in gushes (squirting) is different from the real female ejaculation. While the first has the features of diluted urines (density: 1,001.67 ± 2.89; urea: 417.0 ± 42.88 mg/dL; creatinine: 21.37 ± 4.16 mg/dL; uric acid: 10.37 ± 1.48 mg/dL), the second is biochemically comparable to some components of male semen (prostate-specific antigen: 3.99 ± 0.60 × 103 ng/mL). Conclusions. Female ejaculation and squirting/gushing are two different phenomena. The organs and the mechanisms that produce them are bona fide different. The real female ejaculation is the release of a very scanty, thick, and whitish fluid from the female prostate, while the squirting is the expulsion of a diluted fluid from the urinary bladder.”
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