title: Summarizing slant perception with words and hands; an empirical alternative to correlations in Shaffer, McManama, Swank, Williams & Durgin (2014).
abstract: The paper by Shaffer, McManama, Swank, Williams & Durgin (2014) uses correlations between palm-board and verbal estimates of geographical slant to argue against dissociation of the two measures. This paper reports the correlations between the verbal, visual and palm-board measures of geographical slant used by Proffitt and co-workers as a counterpoint to the analyses presented by Shaffer and colleagues. The data are for slant perception of staircases in a station (N=269), a shopping mall (N=229) and a civic square (N=109). In all three studies, modest correlations between the palm-board matches and the verbal reports were obtained. Multiple-regression analyses of potential contributors to verbal reports, however, indicated no unique association between verbal and palm-board measures. Data from three further studies (combined N=528) also show no evidence of any relationship. Shared method variance between visual and palm-board matches could account for the modest association between palm-boards and verbal reports.
authors.affiliation: School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Edgbaston, Birmingham, West Midlands, United Kingdom, B15 2TT. Electronic address: evesff@bham.ac.uk.
authors.forename: Frank F
authors.initials: FF
authors.lastname: Eves
mesh_terms: D006225:Hand; D006801:Humans; D009949:Orientation / Q000502:physiology*; D013028:Space Perception / Q000502:physiology*
keywords: Dissociation; Geographical slant perception; Staircases; Verbal, visual and palm-board measures