Pythagorean distance and the judged similarity of schematic stimuli

  title={Pythagorean distance and the judged similarity of schematic stimuli},
  author={William C. Rankin and Robert Markley and Selby H. Evans},
  journal={Perception \& Psychophysics},
Independent groups of Ss rated the similarity of pairs of patterns belonging to the same class, either bef ore or af ter a discrimination task of schematic concept formation (SCF). Mean similarity increased as a function of SCF pretraining. A linear relationship was found between a Pythagorean distance measure on the patterns and subjective similarity of pairs of stimuli (r=.88). No such relationship was obtained from an analysis of judgments from a group that viewed random, nonschematic… 
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