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Chapter 364Table 2. Estimates and effect size measures for independent logistic regressions, separately testing the effect of attractiveness in each modality on propensity to date again (see Supplementary Table 7).Modality Rater sex Median OR CrI 89% pd d NVisual Female 2.01 [0.31] 1.59; 2.61 1.00 0.39 [0.08] 482Visual Male 2.91 [0.50] 2.24; 3.92 1.00 0.59 [0.10]Visual Interaction 1.45 [0.30] 1.04; 2.05 0.96 0.20 [0.12]Auditory Female 1.26 [0.20] 0.98; 1.65 0.93 0.13 [0.09] 481Auditory Male 1.30 [0.20] 1.02; 1.67 0.96 0.14 [0.08]Auditory Interaction 1.04 [0.21] 0.74; 1.44 0.55 0.02 [0.12]Olfactory Female 0.82 [0.10] 0.66; 0.99 0.95 0.11 [0.07] 533Olfactory Male 1.08 [0.14] 0.88; 1.34 0.73 0.04 [0.07]Olfactory Interaction 1.33 [0.23] 1.01; 1.76 0.95 0.16 [0.10]DiscussionChoosing a romantic partner is an important life decision. Previous research has mainly focused on the role of physical attractiveness during early stages of partner choice (Asendorpf et al., 2011; Kurzban & Weeden, 2005; Sidari et al., 2021). However, recent evidence reveals that attractiveness is multimodal, further involving scent and sound (Groyecka et al., 2017). Therefore, here, we examined the effect of multimodal attractiveness ratings of static samples in an ecologically valid speed-date setting (Finkel et al., 2007) and asked participants to indicate whether they would like to meet their dating partner again. To our knowledge, this is the first study that examines the effect of sight, sound and scent on speed-date outcomes. Our results are threefold. First, we show that there were only low levels of covariance in the different modalities of attractiveness. Second, using a partial model and independent models, we show that pre-date visual attractiveness ratings correlate strongly with propensity to meet again, while no strong effects were found for vocal and olfactory attractiveness. Third, in the partial model we found no robust sex differences in the importance of the different modalities. In the independent models, however, we did find robust sex differences for the effects of visual and olfactory attractiveness. Here, we discuss these findings and further address possible limitations of our study.In the current study we observed that visual attractiveness correlated positively with auditory attractiveness and olfactory attractiveness, respectively. This finding is in line with the back-up cue hypothesis (Candolin, 2003; Johnstone, 1997). However, it is important to note that the effect sizes were very small when compared to previous studies (Collins & Missing, 2003; Cornwell et al., 2004), and Tom Roth.indd 64 08-01-2024 10:41