Why is it hard to assess thought disorder? Clarifying the third domain of psychosis.
Schizophrenia Research June 1, 2026 L Palaniyappan, Vanteemar S Sreeraj, Ganesan Venkatasubramanian et al. 5 citations
Formal Thought Disorder (FTD) presents psychiatry's central paradox: it is one of the robust predictors of poor outcomes and polygenic risk in psychosis yet remains poorly defined and rarely measured clinically. We systematically reviewed 50 years of FTD assessment (16 rating scales, 32 factor analyses) to understand this paradox. Research to date has implicitly treated FTD as a natural kind, a...