Concurrent fixed-ratio and avoidance responding in the squirrel monkey.
Squirrel monkeys maintained concurrent performances appropriate to a fixed-ratio schedule of food reinforcement on one lever and an avoidance schedule on a second lever. The overall rate of responding maintained by either schedule was not systematically affected when the other schedule was discontinued and its lever removed.
Catania
A C
AC
Deegan
J F
JF
Cook
L
L