TY  - RPRT
        AU  - Jelnov, Pavel
        TI  - Comparison Dimensions and Similarity: Addressing Individual Heterogeneity
        PY  - 2019/May/
        PB  - Institute of Labor Economics (IZA)
        CY  - Bonn
        T2  - IZA Discussion Paper
        IS  - 12355
        UR  - https://www.iza.org/index.php/publications/dp12355
        AB  - How many comparison dimensions individuals consider when they are asked to judge how similar two different objects are? I address individual heterogeneity in the number of comparison dimensions with data from a laboratory experiment. I estimate the smallest number of dimensions such that objects may be represented in space where distance corresponds to similarity. I find that the mean smallest number of dimensions in real data is one standard deviation smaller than in randomly simulated data. Furthermore, I find that individuals who find the objects relatively similar to each other are also the ones who implicitly consider fewer dimensions. 
        KW  - multidimensional scaling
KW  - similarity
KW  - latent dimensions
KW  - dimensionality
        ER  -