The immediate effect of tobacco smoke on the learning ability of albino rats

A multiple-Y maze and an alternation problem were used to compare the learning ability of rats subjected to tobacco fumes for 45 minutes daily with that of their litter-mate controls. Smoking immediately preceded the daily trial. Different concentrations of tobacco were used with two groups. Learning curves and critical ratios fail to disclose a significant difference in the performances of "smokers" and "non-smokers."