Across the entire sample of 10 subjects, there were no significant mean differences in odor ratings between alcohol and placebo sessions for intensity (paired t-test, t = 0.55, p = 0.58), pleasantness (t = 0.49, p = 0.62), or representativeness (t = 1.35, p = 0.18). Ratings for alcohol and placebo sessions were, therefore, averaged for analysis. AO, NApO and ApCO were perceived as equally intense (means ± standard deviation of 7.5 ± 1.0; 7.1 ± 1.2; 7.6 ± 0.8, respectively), although subjects perceived AO as more pleasant (6.8 ± 1.5) than NApO (5.4 ± 2.1; t = 3.82, p = 0.0004), but less pleasant than ApCO (8.0 ± 0.9; t = −4.05, p = 0.0003). The odorants were perceived as highly representative of their sources. AO (8.1 ± 1.7) were perceived as slightly more representative than NApO (6.9 ± 1.8; t = 3.44, p = 0.015), but equally representative as ApCO (7.9 ± 1.1; t = 0.45, p = 0.65).
