Skip to main content
. Author manuscript; available in PMC: 2013 Jul 1.
Published in final edited form as: J Exp Psychol Anim Behav Process. 2012 Apr 30;38(3):233–243. doi: 10.1037/a0027796

Figure 1.

Figure 1

Depictions of the task. A. Monkeys initially saw a sample image in the center of the screen and up to four choice images in the corners. They had to determine where the correct match was located prior to moving the cursor into contact with the image in the center. B. When the cursor moved toward the sample, masks were placed over all choice images, so that monkeys no longer could look to find the matching image.