More than superstition: differential effects of featural heterogeneity and change on subitizing and counting.

@article{Trick2008MoreTS,
  title={More than superstition: differential effects of featural heterogeneity and change on subitizing and counting.},
  author={Lana M. Trick},
  journal={Perception & psychophysics},
  year={2008},
  volume={70 5},
  pages={743-60}
}
This study investigates the effects of item heterogeneity (differences in color and shape) and moment-to-moment feature change as it relates to the issue of whether subitizing and counting involve different processes. Participants enumerated displays of up to eight items that were either homogeneous or heterogeneous. In situations where the heterogeneous displays always had approximately half of the items of one type and half of the other, heterogeneity significantly sped enumeration in the… CONTINUE READING