Preference for the novel object in the Novel Object Recognition Test, assessed in Con, animals exposed to TSE, or animals exposed to Nic at 0.2 or 2 mg/kg/d. Data represent means and SEs obtained from 11 to 14 animals for each sex and treatment. ANOVA indicates a main treatment effect (P < .01), with the TSE and Nic 0.2 groups differing significantly from control, and the Nic 2 group at the margin of significance; the reductions caused by TSE, Nic 0.2, and Nic 2 were not distinguishable from each other.