Differences between perceived age and chronological age in women : A multi-ethnic and multi-centre study / Rainer Voegeli in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 43, N° 5 (10/2021)  

[article]  inINTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 43, N° 5 (10/2021) . - p. 547-560 Titre : Differences between perceived age and chronological age in women : A multi-ethnic and multi-centre study Type de document : document électronique Auteurs : Rainer Voegeli, Auteur ; Rotraut Schoop, Auteur ; Elodie Prestat-Marquis, Auteur ; Anthony Vincent Rawlings, Auteur ; Todd K. Shackelford, Auteur ; Bernhard Fink, Auteur Année de publication : 2021 Article en page(s) : p. 547-560 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Âge chronologique Femmes Groupe ethnique Imagerie (technique) Perception de l'âge Statistique Index. décimale : 668.5 Parfums et cosmétiques Résumé : - Objective : Accuracy in assessing age from facial cues is important in social perception given reports of strong negative correlations between perceived age and assessments of health and attractiveness. In a multi-ethnic and multi-centre study, we previously documented similar patterns of female facial age assessments across ethnicities, influenced by gender and ethnicity of assessors. - Methods : Here we extend these findings by examining differences between estimated age from digital portraits and chronological age (Δ age) for 180 women from three age groups (20–34, 35–49, 50–66 years) and five ethnicities (36 images of each ethnicity, assessed for age on a continuous scale by 120 female and male raters of each ethnicity). - Results : Across ethnicities, Δ age was smallest in French assessors and largest in South African assessors. Numerically, French women were judged oldest and Chinese women youngest relative to chronological age. In younger women, Δ age was larger than in middle-aged and older women. This effect was particularly evident when considering the interaction of women's age with assessor gender and ethnicity, independently and together, on Δ age. - Conclusion : Collectively, our findings suggest that accuracy in assessments of female age from digital portraits depends on the chronological age and ethnicity of the photographed women and the ethnicity and gender of the assessor. We discuss the findings concerning ethnic variation in skin pigmentation and visible signs of ageing and comment on implications for cosmetic science. Note de contenu : - Study sample - Facial imaging - Face ratings - Statistical analysis - Table 1 : Sociodemographic information and skin pigmentation of female and male assessors in the rating study - Table 2 : Sociodemographic information and skin pigmentation of imaged female participants (n = 12 for each group, chronological age in years ± SD) - Table 3 : Main and interaction effects of assessor ethnicity and gender, and participant ethnicity and age group, on differences between perceived and chronological age (Δ age) of female portraits DOI : https://doi.org/10.1111/ics.12727 En ligne : https://drive.google.com/file/d/17PMapcZcJhKn_-Sd2WHq4uZ8M7av_CJ-/view?usp=shari [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36859 [article]

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Predictors of female age, health and attractiveness perception from skin feature analysis of digital portraits in five ethnic groups / Rainer Voegeli in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 45, N° 5 (10/2023)  

[article]  inINTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 45, N° 5 (10/2023) . - p. 672-687 Titre : Predictors of female age, health and attractiveness perception from skin feature analysis of digital portraits in five ethnic groups Type de document : texte imprimé Auteurs : Rainer Voegeli, Auteur ; Remo Campiche, Auteur ; Romain Biassin, Auteur ; Anthony Vincent Rawlings, Auteur ; Todd K. Shackelford, Auteur ; Bernhard Fink, Auteur Année de publication : 2023 Article en page(s) : p. 672-687 Note générale : Bibliogr. ERRATA in Vol. 46, N° 3 (06/2024), p. 478 Langues : Anglais (eng) Catégories : Analyse d'image L'analyse d'image est la reconnaissance des éléments contenus dans l'image. Il ne faut pas confondre analyse (décomposition en éléments) et traitement (action sur les composantes) de l'image. Femmes Groupe ethnique Peau -- Perception visuelle Visage Index. décimale : 668.5 Parfums et cosmétiques Résumé : - Objective : Research indicates the impact of skin colour, tone evenness and surface topography on ratings of age, health and attractiveness in women. In addition to subjective assessments, these effects have been quantified with objective measures derived from skin image analysis. Signs of skin ageing may manifest differently across ethnic groups. However, comparisons have been limited to research with two ethnic groups, preventing conclusions about an ethnicity-specific ranking of skin ageing signs. - Methods : We report results from a multi-ethnic and multi-centre study in which faces of women (n = 180; aged 20–69 years) from five ethnic groups were imaged. Facial images were rated for age, health and attractiveness by members of the same ethnic group (each n = 120). Digital image analysis was used to quantify skin colour, gloss, tone evenness and wrinkling/sagging. We assessed associations between face ratings and skin image measurements in the total sample (i.e. all ethnic groups) and separately by ethnicity. - Results : Skin image analysis revealed differences between ethnic groups, including skin colour, gloss, tone evenness, wrinkling and sagging. Differences in the relative predictive utility of individual skin features in accounting for ratings of age, health and attractiveness also were observed between ethnic groups. Facial wrinkling and sagging were the best predictors of face ratings in each ethnic group, with some differences in the type (or predictive magnitude) of skin features. - Conclusion : The current findings corroborate previous reports of differences between ethnic groups in female facial skin and indicate differential effects of skin features on ratings of age, health and attractiveness, within and between ethnic groups. Facial wrinkling and sagging were the best predictors of age and attractiveness ratings, and skin tone evenness and gloss had an additional role in ratings of health. Note de contenu : - MATERIALS AND METHODS : Study sample - Facial imaging - Face rating - Skin image measurements - Statistical analysis - RESULTS : Comparison of ethnic groups - Associations between health ratings and technical measures DOI : https://doi.org/10.1111/ics.12877 En ligne : https://drive.google.com/file/d/1Z9yks1Tof-E0limHvZCB8PZERlzLLaEm/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40093 [article]

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