Chapter 4: Attention

Besner and Stolz (1999): Stroop effect disappears when focus attention on one letter
     => Filter notion of spatial attention to keep distractors out of information processing system

Gradient notion of spatial attention: efficiency of processing and spread of attention are negatively correlated

The filter and gradient notions of spatial attention are important for processing complex objects
     Treisman and Gelade's (1980) perceptual glue

The filter and gradient notions of spatial attention are not applicable to simple judgments.