 More specifically, the scientific goals of this proposal are to: 1 evaluate the efficacy of a group-based MI intervention on motivational negative symptoms for Veterans with SCZ, and 2 to examine potential biomarkers of negative symptoms and treatment response. I will assess the efficacy of MI with measures from two outcome domains: 1 negative symptoms clinical ratings and 2 functional outcomes real-world improvements in social, instrumental, and independent living. I will assess the relationship between these outcomes and neurophysiological biomarkers pupillometry and electroencephalography EEG. To address these questions, 60 Veterans with SCZ who have at least moderate levels of motivational negative symptoms will be randomly assigned in a 1:1 ratio to MI or a standard treatment relaxation skills training. Both treatments will consist of weekly 60-min group sessions for twelve weeks. The assessment will be administered at baseline, at completion of treatment, and at 6-month follow-up. 