Figure 2. Examples of task stimuli used in Experiments 2 (A) and 3 (B).

A: Participants searched a matrix for the designated digit shown on the left side of each matrix and to state the number of counts vocally. The answers are 2 (upper) and 3 (bottom). B: Participants indicated whether a stimulus contained the letter H or the letter T by pressing the left or right key on a response pad. The upper is a global target stimulus and the bottom is a local target stimulus.