A growing methodology, known as the systems factorial technology (SFT), is being developed to diagnose the types of information-processing architectures (serial, parallel, or coactive) and stopping rules (exhaustive or self-terminating) that operate in tasks of multidimensional perception. Whereas most previous applications of SFT have been in…

Attempts to determine the extent that typicality effects obtained in previous research on natural semantic categories could be obtained in artificial categories purely as a function of structural principles when the frequency and nature of experience with items were controlled. (Author/RK)

This research was concerned with the way people identify and categorize letters and digits; the author attempted to answer which of these processes occurs first, with the focus on whether there is a logically determined sequence involved. (Author/RK)