HUMAN BODY ODOR 415 Table IIIb Intensity Ratings of "Body" Shirts Women Men W+M Women's shirts Mean 3 + SD Mean + SD Mean + SD Day 1 1 2.00 .96 2.40 .03 2.21 .90 2 2.79 1.31 3.00 1.31 2.90 1.29 3 5.57 1.45 5.87 1.25 5.72 1.33 4 2.00 .68 2.47 1.36 2.24 1.09 5 3.00 1.47 3.47 1.64 3.24 1.55 6 2.93 1.22 2.93 1.39 2.93 1.28 7 3.60 1.45 2.67 1.29 3.13 1.43 8 4.07 1.62 3.33 1.76 3.70 1.71 9 2.87 1.73 2.40 1.84 3.63 1.77 10 2.60 1.68 2.07 1.03 2.33 1.40 Day 2 hv. 11 3.64 1.22 3.40 1.59 12 3.43 1.09 3.60 1.06 13 3.36 1.08 3.20 1.26 14 3.14 .66 3.67 .98 15 3.00 1.24 3.53 .83 16 3.07 1.67 3.33 1.68 17 3.87 1.60 3.73 1.71 18 3.47 1.55 3.00 1.81 19 3.07 1.44 3.27 1.53 20 2.53 1.36 2.73 1.07 1-20 2.96 2.96 3.52 1.40 3.52 1.06 3.28 1.16 3.41 .87 3.28 1.07 3.20 1.65 3.80 1.63 3.23 1.68 3.17 1.46 2.63 1.61 2.96 3 Two replications from each respondent enter into the calculation of these means. CONCENTRATION AND PLEASANTNESS The mean pleasantness ratings for the "solution" shirts and the "body" shirts are listed in Table V. These values are Based on three replicated pleasantness judgements for each shirt by each respondent groups I (pleasantness ratings on day 1) and II (pleasantness ratings on day 2 compare Table I) were combined for the "solution" shirts only. The scale used (see Figure 2) ran from 0 = extremely unpleasant to 8 = extremely pleasant. The correlation Between pleasantness and concentration was calculated for each of the test substances, using the two-tailed non-parametric group trend test (7) (Table VI). The most striking finding is the very high negative correlation Between concentration and pleasantness for androstenol and also for substances II and III. Cyclopentadecano- lide shows a totally different pattern in this respect: pleasantness does not correlate significantly with concentration, and in this case the correlation coefficients are posi- tive. The mean pleasantness rating of the T-shirts worn by women was near the midpoint of the scale. The women's shirts were, on the average, rated somewhat more pleasant than were the shits worn by men. The difference in rating Between the most pleasant and the least pleasant shirt was much higher for the shirts worn by men than for the shirts worn by women (Table XI).

416 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS Table IIIb (cont'd) Intensity Ratings of "Body" Shirts Wonhen Men W q- M Men's shirts Mean -+ SD Mean + SD Mean -+ SD Day 1 1 3.29 t.38 3.27 1.39 3.28 1.36 2 3.86 1.29 3.60 1.50 3.72 1.39 3 4.93 1.54 4.87 1.64 4.90 1.57 4 5.07 1.44 5.00 1.46 5.03 1.43 5 3.50 1.70 4.40 1.88 3.97 1.86 6 4.20 1.86 3.27 1.79 3.73 1.86 7 4.93 1.58 3.53 1.88 4.23 1.85 8 5.20 1.78 4.47 1.96 4.83 1.88 9 3.07 1.75 3.13 1.46 3.10 1.58 10 3.33 1.88 2.93 1.58 3.13 1.72 Day 2 11 4.14 1.03 3.80 1.47 12 3.43 t.45 3.13 .92 I 13 2.86 .77 3.13 .92 14 5.64 1.74 5.07 1.16 15 3.50 1.16 3.80 1.01 16 2.13 1.55 2.00 1.00 17 4.46 1.64 3.80 1.61 II 18 2.53 1.41 2.47 .99 19 2.53 1.30 2.67 1.59 20 3.40 1.76 3.47 1.77 Av. 1-20 3.55 3.39 3.97 1.27 3.28 1.19 3.00 .85 5.34 1.47 3.66 1.08 2.07 1.28 4.13 1.63 2.50 1.20 2.60 1.43 3.43 1.74 3.47 Androstenol and III, in their highest dilutions, obtained pleasantness ratings compa- rable to the shirts actually worn. II, at all concentration levels was rated lower in pleasantness than the other test substances at the highest concentration levels its mean ratings were near the low end of the pleasantness scale. Cyclopentadecanolide, at all levels, obtained ratings near the midpoint of the scale and comparable to the female T-shirts. The differences between the pleasantness ratings assigned by male and female subjects were, in general, slight. The male subjects tended to give more favorable ratings to the shirts actually worn, both by women and by men, and somewhat less unfavorable ratings to the higher concentrations of II. Table IV Significance of the Correlation Between Concentration and Perceived Intensity Substance Women Men W q- M z p z p z p Androstenol 6.05 .0001 4.49 .0001 7.40 .0001 III 2.51 .006 3.21 .0007 4.05 .000 l II 7.96 .0001 7.26 .0001 10.76 .0001 CPD 3.39 .0004 3.56 .0002 4.91 .0001