Which set of features are all negative symptoms of schizophrenia?

1. Negative symptoms are those reflecting noticeable decreases and absences in behaviours, emotions or drives. 2. Avolition is lack of motivation for self-initiated activity, and alogia is reduced speech output. 3. Asociality is social withdrawal and lack of interest in interaction, and anhedonia is inability to experience pleasure. 4. Diminished emotional expression, showing no emotion in face, speech or movement, belongs to the same group. 5. Delusions, tangentiality and catatonic posturing are additions to normal experience rather than absences, and grandiosity with flight of ideas describes mania. _Source: OpenStax Psychology (1st ed., CC BY 4.0), Ch 15 "Psychological Disorders", section 15.8 Schizophrenia_