The trajectory of two negative symptom dimensions in first-episode psychosis and the role of cannabis use: A 10-year follow-up study.
Schizophrenia Research January 25, 2023 H. M. Ihler, S. H. Lyngstad, E. Gardsjord et al.
OBJECTIVE To investigate the trajectories of diminished expression and apathy over 10 years. Further, to explore the effects of baseline- and persistent cannabis use on the development of diminished expression and apathy during follow-up, while controlling other potential sources and predictors of secondary negative symptoms. METHODS 351 participants with a first episode of non-affective...