title: Pot/Lid Illusion.
abstract: A new everyday visual size illusion is presented-the Pot/Lid illusion. Observers choose an unduly large lid for a pot. We ask whether the optic slant of the pot brim would increase its apparent size or if vision underestimates the size of tilted lids.
authors.affiliation: University of Roma Tre, Italy.
authors.forename: Stefano
authors.initials: S
authors.lastname: Mastandrea
authors.affiliation: University of Toronto, Canada.
authors.forename: John M
authors.initials: JM
authors.lastname: Kennedy
keywords: horizontal–vertical; illusion; optic slant; size; vision