Does Stevens's Power Law for Brightness Extend to Perceptual Brightness Averaging?
Stevens's power law (ψ∝φβ) captures the relationship between physical (φ) and perceived (Ψ) magnitude for many stimulus continua (e.g., luminance and brightness, weight and heaviness, area and size). The exponent (β) indicates whether perceptual magnitude grows more slowly than physical magnitude (β...
| Publicado en: | Psychological Record Vol. 59; no. 2; pp. 171 - 186 |
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| Formato: | Artículo |
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Psychological Record
Spring2009
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=508056276&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 508056276 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 00332933 PSD jtl: Psychological Record issn: 00332933 maglogo: N pubinfo: dt: Spring2009 vid: 59 iid: 2 pid: 761 pub: Psychological Record artinfo: ui: 508056276 ppf: 171 ppct: 15 formats: fmt: – @attributes: type: T – @attributes: type: P size: 1003KB tig: atl: Does Stevens's Power Law for Brightness Extend to Perceptual Brightness Averaging? aug: au: Bauer, Ben su: Stimulus intensity Brightness perception sug: subj: Stimulus intensity Brightness perception keyword: Brightness discrimination ab: Stevens's power law (ψ∝φβ) captures the relationship between physical (φ) and perceived (Ψ) magnitude for many stimulus continua (e.g., luminance and brightness, weight and heaviness, area and size). The exponent (β) indicates whether perceptual magnitude grows more slowly than physical magnitude (β < 1), directly as physical magnitude (β ≈ 1), or more quickly than physical magnitude (β > 1). These exponents are typically determined using judgments of single stimuli. Miller and Sheldon (1969) found that the validity of Stevens's Power Law could be extended to the case where the mean of a property in an ensemble of items was judged (i.e., average length or average tilt where β ≈ 1), The present experiments investigate the extension of this finding to perceived brightness with β ≈ 0.33 and find evidence consistent with predictions made by Miller and Sheldon. Reprinted by permission of the publisher. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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