The conditions were later reversed: unlimited access to water and limited access to the wheel.
The formulator of this principle conducted an experiment in which rats were given free access to an activity wheel, but restricted access to water. The conditions were later reversed: unlimited access to water and limited access to the wheel. Drinking could be used to reinforce wheel running in the first case, and vice versa in the second case, even though animals usually receive food and water as reinforcements. In the second case, wheel running became a positive reinforcement for drinking water. FTP, identify this principle which states that any response can be reinforced by a more preferred response.
The formulator of this principle conducted an experiment in which rats were given free access to an activity wheel, but restricted access to water.
{Premack} principle