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.
Experimental set-up for a) the solo condition and b) the cooperation condition. The individual who obtained the food was considered the captor (C); the other rope-pulling individual was considered the helper (H, Cooperation condition only); any individual not involved in food acquisition were considered bystander (B).
