Fig. 1: Similarity matrix of individual FTD rating items. | Schizophrenia

Fig. 1: Similarity matrix of individual FTD rating items.

From: Analysis of conceptual overlap among formal thought disorder rating scales in psychosis: a systematic semantic synthesis

Fig. 1: Similarity matrix of individual FTD rating items.

The matrix includes 103 FTD items, with cosine similarity values ranging from 0 (very dissimilar) to 1 (very similar). Several item pairs show near-identical similarity (notably SAPS-SANS and TLC items), indicated by values at or close to 1. Yellow clusters along the diagonal highlight high within-scale coherence (e.g., TALD items 16 to 30), whereas dark vertical and horizontal bands illustrate greater semantic divergence (e.g., CLANG items). TALD thought and language disorder, SAPS-SANS scale for the assessment of positive symptoms and scale for the assessment of negative symptoms, PANSS positive and negative syndrome scale, TLC thought, language, and communication, TLI thought, language, and communication disorder index, BIT assessment of bizarre-idiosyncratic thinking, CLANG clinical language disorder rating scale.

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