Abstract
AbstractThe speed of learning to discriminate between the colors blue and green was studied in dark‐raised chicks and in chicks having controlled exposure to these colors and white prior to learning. The data indicate that: (1) under all conditions of prior experience learning was faster when the response to blue was reinforced; (2) learning was significantly slower in dark‐raised groups than in groups having prior visual experience; and (3) learning was negatively related to systematic increase in the intensity of prior exposure stimulus. These data show that unlearned preferences play a significant role in learning; they combine additively with effects of experience prior to learning and reinforcement during learning.
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