Figure 1.
Four displays (set size = 40) illustrating the possible search tasks from experiment 1. The observer was always required to indicate whether a uniquely oriented red item was present or absent in the display.
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.