title: Angles of shadows as cues for judging the distance of shadow casting objects.
abstract: 40 participants were presented the six possible comparisons of four pictures of cylinders and their shadows. For each comparison, each participant was to decide which cylinder was most distant from a reference point. Overall 15 of the participants got all six judgments correct, an outcome that is exceedingly unlikely by chance.
authors.affiliation: Western Illinois University, Macomb 61455, USA. mfbpa@wiu.edu
authors.forename: B P
authors.initials: BP
authors.lastname: Allen
mesh_terms: D000328:Adult; D003463:Cues; D003624:Darkness; D004215:Distance Perception; D005556:Form Perception; D006801:Humans; D007600:Judgment; D008027:Light; D055095:Optics and Photonics