1994

Ashby, F.G., & Maddox, W.T. (1994). A response time theory of separability and integrality in speeded classification. Journal of Mathematical
          Psychology, 38, 423-466. [.pdf]
 

Ashby, F.G., Maddox, W.T., & Lee, W.W. (1994). On the dangers of averaging across subjects when using multidimensional scaling or the
          similarity choice model. Psychological Science, 5, 144-151. [.pdf]

Maddox, W.T., Prinzmetal, W., Ivry, R.B., & Ashby, F.G. (1994). A probabilistic multidimensional model of location information. Psychological
          Research, 56, 66-77. [.pdf]

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1993

Ashby, F.G., & Maddox, W.T., (1993). Relations between prototype, exemplar, and decision bound models of categorization. Journal of
          Mathematical Psychology, 37, 372-400. [.pdf]

Maddox, W.T., Ashby, F.G., (1993).  Comparing decision bound and exemplar models of categorization.  Perception and Psychophysics, 53, 49-7

[.pdf]

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1992

Ashby, F.G., & Maddox, W.T., (1992). Complex decision rules in categorization: Contrasting novice and experienced performance. Journal of         
          Experimental Psychology: Human Perception and Performance, 18, 50-71. [.pdf]
 

Maddox, W.T., (1992). Perceptual and decisional separabilty. In F.G. Ashby (Ed.), Multidimensional Models of Perception and Cognition. (pp.
          147-180). Erlbaum: Hillsdale, NJ. [.pdf]

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1991

Ashby, F.G., & Maddox, W.T., (1991). A response time theory of perceptual independence. In J.P. Doignon and J.C. Falmagne (Eds.) Mathematical        
          Psychology: Current developments.  (pp. 389-413). Springer-Verlag. [.pdf]

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1990

Ashby, F.G., & Maddox, W.T., (1990). Integrating information from separable psychological dimensions. Journal of Experimental Psychology:
          Human Perception and Performance, 16, 598-612. [.pdf]