2016
DOI: 10.1007/s40806-016-0057-5
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Duration of Cunnilingus Predicts Estimated Ejaculate Volume in Humans: a Content Analysis of Pornography

Abstract: Humans perform copulatory behaviors that do not contribute directly to reproduction (e.g., cunnilingus, prolonged copulation). We conducted a content analysis of pornography to investigate whether such behaviors might contribute indirectly to reproduction by influencing ejaculate volume-an indicator of ejaculate quality. We coded 100 professional pornography scenes depicting the same male actor copulating with 100 different females, affording control for between-male differences in estimated ejaculate volume. … Show more

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Cited by 12 publications
(3 citation statements)
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“…Gallup et al predicted that the ejaculate which accompanies more intense orgasms will contain more sperm and higher concentrations of other seminal chemicals tailored to make conception more likely. For example, recent research by Pham et al (2016) shows that estimates of ejaculate volume as a measure of ejaculate quality, correlate with the duration of cunnilingus as a prelude to sexual intercourse. Because of a history of competition for paternity, coupled with the high costs of being cuckolded, we predict that indications of partner infidelity ought to also be conducive to the occurrence of more intense orgasms in men.…”
Section: Do Orgasms Have Reproductive Consequences?mentioning
confidence: 99%
“…Gallup et al predicted that the ejaculate which accompanies more intense orgasms will contain more sperm and higher concentrations of other seminal chemicals tailored to make conception more likely. For example, recent research by Pham et al (2016) shows that estimates of ejaculate volume as a measure of ejaculate quality, correlate with the duration of cunnilingus as a prelude to sexual intercourse. Because of a history of competition for paternity, coupled with the high costs of being cuckolded, we predict that indications of partner infidelity ought to also be conducive to the occurrence of more intense orgasms in men.…”
Section: Do Orgasms Have Reproductive Consequences?mentioning
confidence: 99%
“…For starters, cunnilingus can be a way to combat sperm competition. Novel research methodsfound via pornography codingsuggest that there is a positive relationship between attributes of male ejaculation and time spent performing cunnilingus among pornographic actors (Pham et al 2016). Therefore, performing cunnilingus before copulation may, in part, produce more sperm which (1) could compete with other sperm in the reproductive tract or (2) produce more sperm to fertilize the ova.…”
Section: Evolutionary Advantages Of Cunnilingus In Humansmentioning
confidence: 99%
“…Discredited theories of semen retention leading to heightened testosterone levels(Pham et al, 2016).…”
mentioning
confidence: 99%