arXiv Computation and Language By Devon Yanitski, Chris Westbury

semanticfa: An R Package for Response-Free Semantic Factor Analysis of Psychometric Scales

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The paper introduces semanticfa, an R package that performs semantic factor analysis on psychometric scales by converting items into language‑model embeddings and factoring their similarities. It demonstrates the method on the 50‑item International Personality Item Pool Big‑Five markers, compares the semantic factors to a large response‑based factor analysis, and shows how the package can interpret factors, flag redundant items, build short forms, and screen new items. The authors propose semantic‑behavioral coherence as a measurable property of a scale, noting that semantic factor analysis complements but does not replace traditional response‑based factor analysis.

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