Judgment of head landmark positions.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002508:Cephalometry; D005145:Face; D005260:Female; D005556:Form Perception; D006257:Head; D006801:Humans; D007600:Judgment; D008297:Male; D009949:Orientation; D011601:Psychophysics; D012737:Sex Factors; D013028:Space Perception; D014796:Visual Perception