Auditory-Visual Speech Processing 2007 (AVSP2007)

Kasteel Groenendaal, Hilvarenbeek, The Netherlands
August 31 - September 3, 2007

A Measure of Auditory-Visual Integration Efficiency Based on Fechnerian Scaling

Hans Colonius (1), Adele Diederich (2)

(1) Department of Psychology, University of Oldenburg, Germany
(2)School of Humanities and Social Sciences, Jacobs University, Bremen, Germany

Auditory-visual integration efficiency (IE) is a presumed skill employed by subjects independently from their ability to extract information from auditory and visual speech inputs. Currently there are no established methods for determining a subjectís IE. Here we present a novel measurement technique to address this issue without requiring explicit assumptions about the underlying audiovisual processing. It is based on a version of the theory of Fechnerian Scaling developed by Dzhafarov and Colonius (Dzhafarov, E.N. and Colonius, H. (2006)). Reconstructing distances among objects from their discriminability, Psychometrika, 72(2), 365-386), that permits the reconstruction of subjective distances among stimuli of arbitrary complexity from their pairwise discriminability.

Full Paper

Bibliographic reference.  Colonius, Hans / Diederich, Adele (2007): "A measure of auditory-visual integration efficiency based on fechnerian scaling", In AVSP-2007, paper P33.