Published Papers That Used SuperLab

Colors and words are combined in the Stroop task to make color congruent and incongruent stimuli. RTs for color naming are faster for congruent stimuli than for incongruent stimuli. Similarly, in a hierarchical recognition task, global letters are composed of smaller letters (e.g., an I composed of Hs) with faster RTs for congruent stimuli. The present study combines these tasks to examine Stroop processing. In Experiment 1, typical color-word stimuli were presented. Stroop interference was found. In Experiment 2, the color-word stimuli were made of letters composed of blocks. Subjects were cued before each trial to name either the global (i.e., word) or local (i.e., color blocks) stimulus. Stroop interference was found. In addition, local stimuli were processed faster than global stimuli. The results suggest that Stroop interference may occur at the response phase, but that color information may be available faster in the process than has been previously assumed.