Penis-measurers of the world, breathe easy: you have been validated. A new study, carried out by sexuality researchers at Indiana University, has found that the average erect penile size is exactly 14.15 cm (that’s 5.57 inches). That number is notable not because it differs from previous studies, but just the opposite: it’s quite in line with prior research, “suggesting that men likely self-report data accurately—or at least reliably—to research teams.” (A choice excerpt: “Although many men may wish their penis were larger and may expend significant effort toward penile enlargement, this does not necessarily mean that men over-report their penile size to researchers.”)
Carrying out a scientifically accurate study on erect penile size is hard difficult, it turns out, because most men have a strange tendency not to develop a full erection while being coldly observed by scientists wielding measuring sticks. Strange. Which is why studies such as this one must rely on men to self-report their sizes, which can also, err, arouse suspicion about the accuracy of this study, for obvious reasons: how do we know these penis stats confirm prior penis stats if these penis stats also rely on self-reported penises? It’s a penis paradox!
Cleverly, Dr. Debby Herbenick incentivized men to be honest, as she explains on Psychology Today:
Unlike most previous studies of self-reported penis size, [subjects] had good reason to report accurate data to us because we were using their size data to match them to a condom that was sized to fit their erect penis. If they reported a bigger-than-reality size to us, they would get a baggier condom. If they reported a smaller-than-reality size to us, the condom would be too tight.
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