Correction to: Neuropsychopharmacology advance online publication, 31 March 2010; doi:10.1038/npp.2010.42

In this article, the data below Table 2 are incorrect. Table 2 is republished here with the correct data.

Table 2 Response Rates of Rats During the Drug Discrimination Study at Different Nicotine Doses (0–0.4 mg/kg) After Prazosin (0–1 mg/kg) Pretreatment