Symmetric or not? A holistic approach to the measurement of fluctuating asymmetry from facial photographs

Previous studies investigated the relationship between facial asymmetry, perceived attractiveness and peoples' traits. The diversity of results might be due to methodological issues and poor standardization between asymmetry scoring methods. We evaluate two traditional scoring methods, the Horizontal Angular Asymmetry (HAA) and the Horizontal Fluctuating Asymmetry (HFA), and propose a geometric morphometrics-based Holistic Facial Asymmetry Score...