Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Mean perceived age of all 187 twins in the original images YfaceYsurr and OfaceOsurr and swapped images YfaceOsurr and OfaceYsurr; the vertical lines represent the 95% CI. Mean perceived ages in years from left to right were YfaceYsurr 77.1 (95% CI 76.5–77.6), YfaceOsurr 77.7 (95% CI 77.0–78.4), OfaceYsurr 78.2 (95% CI 77.6–78.8), and OfaceOsurr 80.6 (95% CI 80.1–81.2).
