Abstract
7 pigeons were reinforced on a 1-min. schedule in the presence of 550 mμ, and on a 5-min. schedule in the presence of 570 mμ. A test of stimulus generalization in the wavelength continuum revealed a gradient essentially the same as that obtained after discrimination training involving complete extinction of responding to 570 and intermittent reinforcement of 550. "It is concluded that the stimulus associated with the weaker of two reinforcement schedules possesses inhibitory properties in common with the extinguished stimulus of the ordinary discrimination situation." (PsycINFO Database Record (c) 2006 APA, all rights reserved)