Fig. 4.
The mean performance of the chimpanzees in Phase 2 at each list position for each list type. Error bars show 95% confidence intervals
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.