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The effect of isolation on performance in the novel object recognition test (3 min familiarization, 3 min recognition, 30 min retention interval). Female Long-Evans rats were housed in either grouped (2–3 per cage) or isolated conditions for 4–6 weeks and then assessed in the novel object recognition test. Sample sizes are shown in the bars in the pass/fail graph at right. Unpublished data by Gulinello, Einstein, IDDRC core
