Which statement suggests that the dorsolateral prefrontal cortex is dysfunctional in people with schizophrenia?
1) People with schizophrenia are impaired on phonological memory tasks.
2) People with schizophrenia show increased blood flow to this area when they perform the Wisconsin Card Sort task.
3) People with schizophrenia display disturbance in both cognition and memory.
4) People with schizophrenia are impaired on tasks requiring memory for a small number of items after a short delay.