Abstract
Squirrel monkeys (Saimiri sciureus) were trained on visual recognition memory tasks in a Wisconsin General Testing Apparatus with a trial-unique procedure that used 250 objects as stimuli. In Experiment 1, acquisition of a trial-unique delayed non-match-to-sample task (DNMS) was compared with acquisition of a trial-unique delayed match-to-sample (DMS) task. The DNMS task was learned in significantly fewer trials and with significantly fewer errors. Two animals in the DNMS group demonstrated highly accurate retention of the DNMS strategy despite an 11-month hiatus in experimental testing. In Experiment 2, the same procedures were used to study the learning of lists of 3, 5, 10, or 20 serially presented items. Although the animals were able to accurately remember lists of up to 20 items, there was no evidence of serial position effects.
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Support for this research was provided by Grant 1R03 MH 34180-01 from the National Institute of Mental Health.
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Overman, W.H., McLain, C., Ormsby, G.E. et al. Visual recognition memory in squirrel monkeys. Animal Learning & Behavior 11, 483–488 (1983). https://doi.org/10.3758/BF03199805
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DOI: https://doi.org/10.3758/BF03199805