title: Comment on 'angle illusion on a picture's surface' by Hammad et al. (2008).
abstract: Hammad et al.'s (2008) conclusions as to the basis of angle illusions on a picture's surface are not justified by their data, which cannot in principle differentiate between their proposal and the proposed alternatives.
authors.affiliation: Psychology Department, American University, 4400 Massachusetts Avenue, Washington DC 20016, USA. lydia.maniatis@gmail.com
authors.forename: Lydia M
authors.initials: LM
authors.lastname: Maniatis
mesh_terms: D005556:Form Perception / Q000502:physiology*; D006801:Humans; D007088:Illusions / Q000502:physiology*; D010151:Paintings; D010364:Pattern Recognition, Visual / Q000502:physiology*