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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 overreport their penile size to researchers.")