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There is a wealth of literature associating schizophrenia withdisorders of attention. This study bases on the two-stage approach of visual selective attention. The pre- attentiveparallel processcomputes how different each object is from each of the other objectswithin a particular stimulus dimension. Attention automatically drawto the location having the highest activation, implying that the subjects select location automatically and are irrespective of their intention. Two Stroop tasks used to differentiate schizophrenics and nornalic''sattentional processes, and try to figure out which stageis the caution of schizophrenic''s dysfunctional attention. As the result, schizophrenic is not different with normalics on pre-attentiveprocess, but do have something problem onattentional process when theywhen they have to inhibit some information. It''sstill not a conclution,because the deficit of inhibition can not explain the results perfectly.
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