Figure 1.
Photograph of the impossible task setup. (A) Depicts the testing field with starting location, container location and experimenter location. (B) Close-up photo of the subject interacting with the container.
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.