Information for Men

By Brandon Kelly

Among all mammals, man apparently is the only one who has a kind of consuming concern about the size of his penis. The fact that average penis size among men is remarkably larger, longer and thicker than the average penis size of other primates, including the bigger primates like the gorilla, should be good enough for men. But no, this is obviously not the case.

There are no official figures for average penis size. Hence, the measurements of the average penis size will naturally vary from source to source, depending on whom you ask. Researchers have undertaken numerous studies that seek to determine average penis size of men. Their results provide some insight about how you measure up.

In September 1996, the Journal of Urology published a study that pegged average penis size (length) at 12.9 cm or 5.0 inches. In December 2000, the International Journal of Impotence Research came out with its own study that placed average penis size (length) when erect at 13.6 cm or 5.35 inches.

Meanwhile, Lifestyle Condoms conducted its own study during Spring Break 2001 among college students frolicking in Cancun, Mexico and their findings revealed an average penis size when erect of 14.9 cm or 5.9 inches.

Two other surveys were conducted online recently and their findings are totally different from the rest: Sizesurvey pegged average penis size at 16 cm or 6.4 inches while TheConfidentPenis pegged average penis size when erect at 15.6 cm or 6.1 inches.

The Lifestyles Condom study also measured average penis size (girth) when erect and found an average of 12.6 cm or 5.0 inches.

For flaccid length, the Journal of Urology placed average penis size at 8.8 cm or 3.5 inches. Several studies stressed that the length of a flaccid penis is not proportional to its length when erect. Some studies cite instances when a below-average flaccid penis would grow to five times its length and twice its girth when erect. Meanwhile, an above-average flaccid penis might only grow 1.5 times when erect.

A word of caution here: many of these studies could be unreliable depending on the manner that the survey was conducted. For instance, if there was self-selection bias involved, which means that men could choose to either be measured or not, the results would likely be biased. The likelihood is that men who felt they had small penises would refrain from being measured while those with larger penises would readily subject themselves to measurement. There are no studies that have taken into account this self-selection bias.

In addition, those studies which require self-reporting of penis size (the online studies for instance) will likely have flawed results given the inclination of men to exaggerate their penis size or measure the penis incorrectly. For instance, the two online studies on average penis size mentioned above reported significantly higher measurements than the other studies.

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