hakan has lost interest in all things--friendship, work, hobbies, dating--and he doesn't even seem bothered by the fact that he has no job, no goals, no get up and go. a clinical psychologist might diagnose hakan's striking lack of interest as . group of answer choices a negative symptom of schizophrenia a positive symptom of schizophrenia a differentiating symptom of schizophrenia a florid symptom of schizophrenia