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Affective values continue to attract attention as a new evaluation axis of commercial value. Our research emphasizes the affective value of contents based on the physical attributes of containers/packages. We previously performed affective evaluation experiments on the tactile material perception of bead-coated resin surfaces with different surface textures generated by such physical attributes as resin materials, bead diameters, and bead densities. Our results clarified the affective relationship between bead-coated resin surfaces and related adjectives. In our new affective evaluation experiment, we added hues, which is one of the three elements of color, and performed two preliminary experiments to select appropriate adjective pairs for the affective evaluation of the effect of hues and to select hue candidates. With 21 adjective pairs and seven hues, we experimentally clarified the combined effect of tactile sensations and hues on affective evaluations using combinations of actual bead-coated resin and 3D models with both male and female participants in their 20's or 40's/50's. Our analysis results suggest that hue and bead diameter have stronger effects than gender and age-generation, suggesting that the influences of physical attributes are stronger than customer gender and age, which is useful from the viewpoint of container/package manufacturing and can be applied to web services with visual and tactile information.

We previously performed affective evaluation experiments on tactile material perception of bead-coated resin surfaces with different surface textures generated by such various physical attributes as resin materials, bead diameters and bead densities. Our results clarified the affective relation between beads-coated resin surfaces and related adjectives. In our new affective evaluation experiment, we added hues, which is one of the three elements of color, and performed two preliminary experiments to select appropriate adjective pairs for affective evaluation of the effect of hues and to select the hue candidates. With 21 adjective pairs (ex. masculine-feminine and relaxed-anxious), and seven hues (ex. yellow-red and blue-purple), we clarified the combined effect of the tactile sensation and the hues on the affective evaluations using combinations of actual bead-coated resin and 3D models. Our analysis results suggest that hue, bead diameter, and gender are important for affective evaluation.

Kansei/affective values are attracting attention as a new evaluation axis of commercial value. We performed affective evaluation experiments on the tactile material perception of bead-coated resin surfaces and found that physical attributes change affective evaluations. Then, we planned to perform new affective evaluation experiment by adding hues, one of the three elements of color, as an important attribute of surfaces as the next step of our research. For the experiment, we performed two preliminary experiments: the experiment to select appropriate adjective pairs, and the experiment to select the hue candidates. This report describes the first preliminary experiment. We performed an experiment to reduce the number of adjective pairs for affective evaluations. The experimental results were analyzed by correlation analysis and hierarchical clustering analyses. From the results of those analyses, we selected 21 adjective pairs.

Humans can manipulate objects with grasp forces maintained slightly above the minimum required force to prevent slipping. When humans grasp and lift an object, they use fast acting receptors in their skin. These receptors respond to local slips that occur before the gross slip. The estimation of the coefficient of friction and the detection of the incipient slip play a key role in human grasp stability. However, it is not easy to strictly measure the coefficient of friction between the skin and the object’s surface during object manipulations because the shape and dryness of an individual’s skin vary widely. To quantitatively and continuously evaluate the slip condition during a sliding motion, we propose ‘eccentricity’ in the contact area as a measure, which is determined based on the changes in the contact area before and after the sliding motion. In this paper, we employ eccentricity-based slip condition measurement and evaluate the slip condition between a human’s skin and various surface textures. Then, we compare the results with the affective evaluation experiments to assess the subjective feeling of the surface texture and discuss the influence of the slip condition on the subjective feeling.