Echoism, Facial Symmetry

Echoism is a theorised aspect of facial symmetry. Facial symmetry, is one element of bodily symmetry, including fluctuating asymmetry. Along with traits such as averageness and youthfulness it influences judgements of aesthetic traits of physical attractiveness and beauty , and is associated with fitness-linked traits including health, It is also hypothesized as a factor in both interpersonal attraction and interpersonal chemistry.