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Self-measured vs clinician-measured penile length

Comparison of self-measured and clinician-measured penile length data, including differences in averages and variability

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Jan 19, 2026

How do measurement methods (self-report vs. clinical) affect reported average penis length in studies?

Clinical and self-reported measurements of penile length diverge in predictable ways: self-reports tend to be larger on average due to social desirability and perceptual bias, while clinician-measured...

Jan 19, 2026

Surely it's not possible that most men only have penises just over 5 inches long?

Large, peer‑reviewed aggregates place the average erect penis length in the low‑to‑mid 5‑inch range — roughly 5.1–5.5 inches — which means that while many men cluster around “just over 5 inches,” ther...