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Deviations of Visual Expectation From Somatosensory Experience in Emotional Quality: Effects of Surface Characteristic in Context of “Lifting Object”

[+] Author Affiliations
Hideyoshi Yanagisawa, Norihito Yuki

University of Tokyo, Tokyo, Japan

Paper No. DETC2011-47568, pp. 825-832; 8 pages
doi:10.1115/DETC2011-47568
From:
  • ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 2: 31st Computers and Information in Engineering Conference, Parts A and B
  • Washington, DC, USA, August 28–31, 2011
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 978-0-7918-5479-2
  • Copyright © 2011 by ASME

abstract

A deviation of reality from our prior expectation causes positive or negative emotions such as unexpected pleasure or disappointment depending on the condition. Although recognition of this psychological phenomenon has much potential in the design of a product’s emotional quality, i.e., that which evokes the customer’s specific feelings, impressions, or emotions, this factor is largely unexplored. In the transition from prior expectation to posterior experience, we often observe switching sensory modalities, such as from vision to touch. In this paper, we discuss the differences in emotional quality between different sensory modalities in the context of shifting from visual expectation to somatosensory experience. As a case study, we investigate the effects of an object’s surface characteristics on the deviation from visual expectation in the context of “lifting an object”. In this context, the sensory modality shifts from vision to touch and vision, i.e., we see and then lift a target object. We conducted an experiment using cylinder-shaped objects of equal weight with different surface characteristics such as brightness, roughness and gloss. The experiment consists of three phases. 1) We asked eight participants to give their impressions by only looking at the object using adjectives and onomatopoeias, 2) we asked them to lift the objects and recorded their grip force, and 3) we conducted the same evaluation as the first phase except that the participants were allowed to pick up the objects. The results show that the deviation from visual prediction regarding object massiveness and surface roughness can be observed using redundant grip force differences, and that this deviation affects a posteriori tactile emotional qualities such as tactile feelings. With the result, we discuss the need to consider such deviations in emotional quality design.

Copyright © 2011 by ASME

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