ABSTRACT
The equilibrium response rate generated by simple schedules of reinforcement is known to depend on several parameters of reinforcement. These include rate of delivery, magnitude, delay, and type (de Villiers, 1977; de Villiers & Herrnstein, 1976; Miller, 1976). There are probably other reinforcement parameters that also influence responding. For example, the viscosity and temperature of a sucrose solution, or the volume and shape of a food pellet, might alter the equilibrium response rate. Hot sucrose solutions or oddly shaped food pellets that are difficult to manipulate seem likely to support lower response rates than would standard versions of these reinforcers.
