Groups of paranoid reactive and nonparanoid process schizophrenic subjects participated in an experiment in which they were reinforced to modify attentional and autonomic responsiveness to differential excitatory and inhibitory avoidance stimuli. Groups did not differ in autonomic responsiveness or in ability to modify GSR and FPV activity to the differential avoidance stimuli. Groups were found to differ in their response to experimental instructions. Paranoid subjects reported being able to exert considerable emotional control during emotional stress. Nonparanoid subjects reported an inability to exert emotional control during stressful stimulation.