Abstract
Subject and Apparatus A 3-pound, experimentally naive, cinnamon Cebus was used. This species does not have food pouches, and is described by Kltlver (1933) as being especially manipulative. Apparatus consisted of a large cage (54 by 26 by 36 inches), in which S was both housed and tested, and of the lever on which S was tested. A lever, built of 0.5-inch aluminum stock, was introduced through a normally closed port in the side of the cage; it projected about 3.5 inches into the cage, at a distance of about 18 inches from the base of the cage. The lever responded to a force of about 55 grams. When moved through an arc of about 5 inches, it operated an electric counter.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
