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Dive into the research topics where Chihiro Saegusa is active.

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Featured researches published by Chihiro Saegusa.


Frontiers in Psychology | 2015

Visual attractiveness is leaky: the asymmetrical relationship between face and hair

Chihiro Saegusa; Janis Intoy; Shinsuke Shimojo

Predicting personality is crucial when communicating with people. It has been revealed that the perceived attractiveness or beauty of the face is a cue. As shown in the well-known “what is beautiful is good” stereotype, perceived attractiveness is often associated with desirable personality. Although such research on attractiveness used mainly the face isolated from other body parts, the face is not always seen in isolation in the real world. Rather, it is surrounded by one’s hairstyle, and is perceived as a part of total presence. In human vision, perceptual organization/integration occurs mostly in a bottom up, task-irrelevant fashion. This raises an intriguing possibility that task-irrelevant stimulus that is perceptually integrated with a target may influence our affective evaluation. In such a case, there should be a mutual influence between attractiveness perception of the face and surrounding hair, since they are assumed to share strong and unique perceptual organization. In the current study, we examined the influence of a task-irrelevant stimulus on our attractiveness evaluation, using face and hair as stimuli. The results revealed asymmetrical influences in the evaluation of one while ignoring the other. When hair was task-irrelevant, it still affected attractiveness of the face, but only if the hair itself had never been evaluated by the same evaluator. On the other hand, the face affected the hair regardless of whether the face itself was evaluated before. This has intriguing implications on the asymmetry between face and hair, and perceptual integration between them in general. Together with data from a post hoc questionnaire, it is suggested that both implicit non-selective and explicit selective processes contribute to attractiveness evaluation. The findings provide an understanding of attractiveness perception in real-life situations, as well as a new paradigm to reveal unknown implicit aspects of information integration for emotional judgment.


Journal of Experimental Psychology: Human Perception and Performance | 2016

Judgments of facial attractiveness as a combination of facial parts information over time: Social and aesthetic factors.

Chihiro Saegusa; Katsumi Watanabe

Facial attractiveness can be judged on the basis of visual information acquired in a very short duration, but the absolute level of attractiveness changes depending on the duration of the observation. However, how information from individual facial parts contributes to the judgment of whole-face attractiveness is unknown. In the current study, we examined how contributions of facial parts to the judgment of whole-face attractiveness would change over time. In separate sessions, participants evaluated the attractiveness of whole faces, as well as of the eyes, nose, and mouth after observing them for 20, 100, and 1,000 ms. Correlation and multiple regression analyses indicated that the eyes made a consistently high contribution to whole-face attractiveness, even with an observation duration of 20 ms, whereas the contribution of other facial parts increased as the observation duration grew longer. When the eyes were averted, the attractiveness ratings for the whole face were decreased marginally. In addition, the contribution advantage of the eyes at the 20-ms observation duration was diminished. We interpret these results to indicate that (a) eye gaze signals social attractiveness at the early stage (perhaps in combination with emotional expression), (b) other facial parts start contributing to the judgment of whole-face attractiveness by forming aesthetic attractiveness, and (c) there is a dynamic interplay between social and aesthetic attractiveness. (PsycINFO Database Record


Frontiers in Psychology | 2015

Interpreting text messages with graphic facial expression by deaf and hearing people

Chihiro Saegusa; Miki Namatame; Katsumi Watanabe

In interpreting verbal messages, humans use not only verbal information but also non-verbal signals such as facial expression. For example, when a person says “yes” with a troubled face, what he or she really means appears ambiguous. In the present study, we examined how deaf and hearing people differ in perceiving real meanings in texts accompanied by representations of facial expression. Deaf and hearing participants were asked to imagine that the face presented on the computer monitor was asked a question from another person (e.g., do you like her?). They observed either a realistic or a schematic face with a different magnitude of positive or negative expression on a computer monitor. A balloon that contained either a positive or negative text response to the question appeared at the same time as the face. Then, participants rated how much the individual on the monitor really meant it (i.e., perceived earnestness), using a 7-point scale. Results showed that the facial expression significantly modulated the perceived earnestness. The influence of positive expression on negative text responses was relatively weaker than that of negative expression on positive responses (i.e., “no” tended to mean “no” irrespective of facial expression) for both participant groups. However, this asymmetrical effect was stronger in the hearing group. These results suggest that the contribution of facial expression in perceiving real meanings from text messages is qualitatively similar but quantitatively different between deaf and hearing people.


international conference on knowledge and smart technology | 2014

Is an attractive face attractive for all? An exploratory research on attractiveness evaluation by female observers

Chihiro Saegusa; Katsumi Watanabe

Human facial attractiveness plays an important role in social decisions, e.g., mate choices. Researches have investigated gender difference on facial attractiveness perception, both in terms of the target face and the evaluators and have revealed the difference in facial features that influence attractiveness evaluation of male faces and female faces. In addition, fluctuations of females preference on facial attractiveness evaluation of male faces have been reported. Our motivation for the current study was along the same line with this gender difference, but particularly focusing on the individual variety of evaluating facial attractiveness in female evaluators. The results showed that, while overall average patterns in attractiveness ratings were similar in evaluating male and female faces, more inter-evaluator diversity was found when the female evaluators rated more attractive male faces but not for female faces. These findings support the literature indicating the presence of deferential processes for face attractiveness evaluations of female and male faces.


Archive | 2008

Hair evaluation method and system

Masakazu Yamaguchi; Takashi Ito; Shinobu Nagase; Chihiro Saegusa


Archive | 2008

Evaluation method and system of hair

Takashi Ito; Shinobu Nagase; Chihiro Saegusa; Masakazu Yamaguchi


Journal of Vision | 2010

Visual attractiveness is leaky (2): hair and face

Chihiro Saegusa; Eiko Shimojo; Junghyun Park; Shinsuke Shimojo


The Journal of The Institute of Image Information and Television Engineers | 2015

2-2 Perception of Facial Attractiveness

Katsumi Watanabe; Chihiro Saegusa


asia pacific signal and information processing association annual summit and conference | 2014

Seeing faces in noise: Exploring machine and human face detection processes by the reverse correlation method

Chihiro Saegusa; Megumi Yamaoka; Katsumi Watanabe


Transactions of Japan Society of Kansei Engineering | 2014

Hair Color Suitability and Perceived Attractiveness: Self-evaluation versus Evaluation by Others

Chihiro Saegusa; Katsumi Watanabe

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Shinsuke Shimojo

California Institute of Technology

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Eiko Shimojo

California Institute of Technology

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Janis Intoy

California Institute of Technology

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Junghyun Park

California Institute of Technology

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