Figure 3. Decision behaviour.
Mean number of trials in which subjects from the different species retrieved the correct object (+STD). Asterisks indicate results different from chance (p<0.05).
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.