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Index/Topics/Self-Reported Data

Self-Reported Data

Psychological drivers and methodological issues affecting self-reported data

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2 results
Jan 16, 2026
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What percentage of men have an 8.25" long penis with a 6" girth?

Measured studies put the average erect penis length at about 5.1–5.5 inches and the average erect girth at roughly 4.6–4.8 inches (11.66–12.2 cm), and peer‑reviewed analyses show that a 6.3‑inch erect...

Feb 8, 2026

How much do self‑reported penis measurements differ from clinician‑measured values in large studies?

Large-scale analyses and systematic reviews find a consistent pattern: erect lengths average substantially higher than values, with typical overestimates on the order of roughly 1–3 cm (about 0.4–1.2 ...