impressionvarianceattributeface-liketraittrait impressionfacial attributeneural networkraterattribute-basedattribute-based approachconsiderable real-world consequenceimpression of social traitrelevant physical featurekey aspect of the systematic variationnaive raterpredictable social trait impressionface-like imagevariabilityconsiderable variability of the photographrater 's impressionlinear combination of facial attributeunseen ambient imageunseen ambient image of facewidespread use of image of facefacial image