For analyses of the behavioral data, percentages of correct responses (‘yes’ to odors, ‘no’ to blank air) were submitted to repeated measures ANOVA with condition (weak, medium, strong, blank air) as within-subjects factor, and group and gender as between-subjects factors. A d’-like sensitivity measure dL (logistic distribution; Snodgrass & Corwin, 1988) was calculated from the hit rates for each odor intensity and the false alarm rates for blank air and submitted to a similar ANOVA using a three-level within-subjects factor condition (weak, medium, strong).
