In addition, multiple regression analysis revealed associations between perceptual and affective properties for vision, audition, and touch that were consistent with the factor analytic results. Furthermore, inter-participant correlations were high for “surface brightness,” “sound sharpness,” and “surface roughness.” However, results obtained with a subsidiary experiment comparing stone and wood suggested that this pattern of results might have been specific to wood. Future research should be aimed at investigating whether the findings of the present study regarding the material properties of wood extend to other types of materials.