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. 2014 Jan 2;7:102. doi: 10.3389/fnint.2013.00102

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Copyright © 2014 Butler, Ariwodola and Weiner.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Homecage, two-bottle choice intermittent access ethanol (EtOH) self-administration. Socially isolated (SI) rats drank significantly more EtOH than group housed (GH) rats over the 6 week period [F(1,96) = 18.73, p < 0.01; A], and SI rats showed significantly greater preference for EtOH [F(1,95) = 21.48, p < 0.01; B]. SI rats drank nearly twice as much as GH rats (t = 8.165, p < 0.001, SI: 2.63 ± 0.13 g/kg; GH: 1.44 ± 0.08 g/kg; C), and showed significantly greater preference (t = 7.394, p < 0.001; SI: 0.245 ± 0.01; GH: 0.127 ± 0.01; D). *p < 0.05 SI vs. GH rats.