A perceptual mapping procedure for analysis of proximity data to determine common and unique product-market structures |
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| Affiliation: | 1. Department of Psychology, University of Amsterdam, The Netherlands;2. Department of Psychology, Leiden University, The Netherlands;3. Leiden Institute for Brain and Cognition, Leiden University, The Netherlands;4. Center for Experimental Economics and Political Decision Making (CREED), University of Amsterdam, The Netherlands;1. Food Irradiation Dept., National Centre for Radiation Research & Technology Atomic Energy Authority, P.O. Box 8029, Nasr City, Cairo, Egypt;2. Polymer chemistry Dept., National Centre for Radiation Research & Technology Atomic Energy Authority, P.O. Box 8029, Nasr City, Cairo, Egypt;3. Horticulture Dep., Faculty of Agriculture, Ain Shams University, P.O. Box 68, Hadayek Shobra, Cairo, Egypt |
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| Abstract: | Traditional techniques of perceptual mapping hypothesize that products are differentiated in a common perceptual space of attributes. This paper suggests that each product is differentiated not only in a common perceptual space, but also a unique perceptual space consisting of as many dimensions as the number of products. It provides a model and estimation procedure based on alternating least squares for estimating the model parameters. |
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