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Comments(4)

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    Patrick Jern does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment. Even so, the question lingers: how fast is too fast, and on what grounds do we draw the line between function and dysfunction? This, in turn, could conceivably result in poor confidence, low self-esteem and less overall sexual satisfaction for all involved. It seems recreational, not procreational, sex is where this problem needs addressing. The blokes among our closest relatives in nature — the primates — will generally not copulate any longer than necessary to achieve ejaculation. Most chimpanzees will have this task done and dusted in less than ten seconds.
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    Measuring sperm backflow following female orgasm: a new method

    Evolutionary explanations for sexual behavior and orgasm most often posit facilitating reproduction as the primary function i. Other reproductive benefits of sexual pleasure and orgasm such as improved bonding of parents have also been discussed but not thoroughly. Although sex is known to be highly reinforcing, behaviorist principles are rarely invoked alongside evolutionary psychology in order to account for human sexual and social behavior. In this paper, I will argue that intense sexual pleasure, especially orgasm, can be understood as a primary reinforcer shaped by evolution to reinforce behavior that facilitates reproductive success i. Next, I will describe an evolutionary account of social shaping. In particular, I will focus on how humans evolved to use orgasm and sexual arousal to shape the social behavior and emotional states of others through both classical and operant conditioning and through both reproductive and non-reproductive forms of sexual behavior. Finally, I will describe how orgasm is a signal of sensitivity to reinforcement that is itself reinforcing.
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    I am in an amazing relationship and I am so happy to have found someone I can truly be myself with. Our sex life is great; I rarely orgasm through penetrative sex which we discuss, and he always ensures that I orgasm another way, usually before he does. I know he genuinely loves me and I love him but I find this situation very frustrating.
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    Human female orgasm is a vexed question in the field while there is credible evidence of cryptic female choice that has many hallmarks of orgasm in other species. Our initial goal was to produce a proof of concept for allowing females to study an aspect of infertility in a home setting, specifically by aligning the study of human infertility and increased fertility with the study of other mammalian fertility. In the latter case - the realm of oxytocin-mediated sperm retention mechanisms seems to be at work in terms of ultimate function differential sperm retention while the proximate function rapid transport or cervical tenting remains unresolved. A repeated measures design using an easily taught technique in a natural setting was used.
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