title: Liquid-specific stimulus properties can be used for haptic perception of the amount of liquid in a vessel put in motion.
abstract: We investigated whether people can use haptic liquid-specific information made available by shaking the vessel containing the liquid. In experiment 1 we studied to what extent people can discriminate between liquid and solid substances and determine the amount of substance in the shaken vessel, as well as the effects of exploratory procedures on these abilities. Exploratory procedures including horizontal shaking of the vessel produced accurate identification of the content and more precise judgments for a liquid than for a solid, but vertical lifting produced an overestimation of the amount of liquid. In experiment 2 we demonstrated that people can discriminate between the amount of liquid and the amount of solid in the same vessel. Three theories of what liquid-specific stimulus properties are picked up by shaking the vessel are preliminarily examined.
authors.affiliation: Department of Psychology, Uppsala University, Box 1225, SE 751 42 Uppsala, Sweden. Gunnar.Jansson@psyk.uu.se
authors.forename: Gunnar
authors.initials: G
authors.lastname: Jansson
authors.forename: Peter
authors.initials: P
authors.lastname: Juslin
authors.forename: Leo
authors.initials: L
authors.lastname: Poom
mesh_terms: D000328:Adult; D003216:Conditioning, Operant; D004192:Discrimination, Psychological / Q000502:physiology*; D005260:Female; D006801:Humans; D007600:Judgment; D008297:Male; D009038:Motion; D011601:Psychophysics; D013236:Stereognosis / Q000502:physiology*