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Pigeons performing rule-based (RB) and information-integration (II) tasks A. Proportion of correct responses in each session from the onset of learning forward for 8 RB-learning pigeons (filled-square symbols) and 8 II-learning pigeons (open-triangle symbols). B. Proportion of correct responses in each session from the criterial block backward for 8 RB-learning pigeons and 8 II-learning pigeons.
