Figure 2.

Performance for healthy individuals performing this task. Percent accuracy for targets appearing at different locations (left vs. right) and different scales (local vs. global). The task was to press a green button whenever a circle was present, regardless of whether this was a local feature (four leftmost columns) or a global feature (two rightmost columns), and to press a red button if there was no circle present (not shown). Bars show performance for different target locations, with example displays shown beneath each column (with error bars showing normalized standard error, as suggested by Loftus and Masson, 1994). Note that local features are detected more accurately when they appear on the right relative to more leftward locations. This appears to occur both within objects (allocentric) and between visual fields (egocentric). Global form shows the opposite pattern with global targets detected more accurately on the left than the right visual field.