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.
Example images from the low and high poles of four global properties examined in this experiment. These images also illustrate the basic-level categories used in the experiment (river, mountain, field, and field, from left to right in the top row; forest, forest, desert, and lake, from left to right in the bottom row).
