Types and tokens in visual letter perception.

  title={Types and tokens in visual letter perception.},
  author={Michael C. Mozer},
  journal={Journal of experimental psychology. Human perception and performance},
  volume={15 2},
Five experiments demonstrate that in briefly presented displays, subjects have difficulty distinguishing repeated instances of a letter or digit (multiple tokens of the same type). When subjects were asked to estimate the numerosity of a display, reports were lower for displays containing repeated letters, for example, DDDD, than for displays containing distinct letters, for example, NRVT. This homogeneity effect depends on the common visual form of adjacent letters. A distinct homogeneity… CONTINUE READING