Research suggests that the more positive the first drug experience, the more likely addiction will develop. Since smoking is initiated in a social setting, it is surprising how little is known about social context effects on acquisition of nicotine self-administration. We investigated this issue in rats during late adolescence using conjoined self-administration chambers that had a removable shared wall. Rats were assigned to training conditions with either a solid black plexiglass or wire mesh partition in place throughout 22 subsequent 2-hour daily training sessions.
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