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This experiment assessed the ability of rats to learn uncued free operant single- and double-alternation tasks. Each of six male albino rats was trained to single and double alternate responses between two levers in an operant conditioning chamber. All rats, quickly mastered the single-alternation task. Accuracy improved with increased double-alternation training and was above the level predicted by chance. However, double-alternation accuracy was higher when extra responses were allowed (e.g., LLLRR was reinforced as was LLRR). The rats in this experiment were totally unable to perform two correct double alternations in sequence (i.e., LLRRLLRR or RRLLRRLL). |
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