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lüll On the generality and limits of abstraction in rats and humans Urcelay GP; Miller RRAnim Cogn 2010[Jan]; 13 (1): 21-32In this review, we address the question, central to cognition, of whether nonhuman animals such as rats are capable of extracting and extending information from a given learning situation to a new learning situation without generalizing through a physical dimension of the stimuli.This capacity underlies abstraction, which is a hallmark of human cognition and necessary for complex information processing such as language acquisition. We selectively review recent experiments with rats in which systematic changes in information processing of new stimuli are observed after training with different stimuli. These results strongly suggest that this capacity is present in rats. We also review two articles in which clear limitations to this capacity are detected. We conclude that, within specified limits, rats are capable of using prior experience when faced with a learning situation that involves new stimuli.We interpret this ability as a rudimentary form of abstraction. In the face of these provocative results, new theories of learning should be designed to account for these findings.|*Cognition[MESH]|*Generalization, Psychological[MESH]|Animals[MESH]|Humans[MESH]|Imagination[MESH]|Learning[MESH]|Rats/*psychology[MESH] |