Spanish adaptation of the Green Paranoid Thought Scales

  1. Ibáñez-Casas, Inmaculada
  2. Femia Marzo, Pedro
  3. Padilla, José Luis
  4. Green, Catherine E. L.
  5. Portugal Fernández del Rivero, Enrique de
  6. Cervilla Ballesteros, Jorge Antonio
Revista:
Psicothema

ISSN: 0214-9915

Año de publicación: 2015

Volumen: 27

Número: 1

Páginas: 74-81

Tipo: Artículo

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Otras publicaciones en: Psicothema

Resumen

Antecedentes: el objetivo del presente estudio fue adaptar y obtener evidencias de validez de la versión española de las escalas de pensamiento paranoide de Green (S-GPTS). Método: 191 participantes españoles respondieron al S-GPTS, al Inventario de Delirios de Peters (PDI) y a medidas de psicopatología. Resultados: el Análisis de Componentes Principales a partir de la matriz de correlaciones policóricas identificó dos factores que explicaban el 71% de la varianza acumulada. El coeficiente a de Cronbach para el S-GPTS y sus subescalas fue superior a .90 en ambos grupos. El valor del área bajo la curva ROC fue más alto para el S-GPTS (.898) que para el PDI (.859). El punto de corte que mejor discriminaba entre el grupo clínico y el no clínico fue 92 (97,35% de sensibilidad, 65% de especificidad). Las puntuaciones del S-GPTS correlacionaron positivamente con el PDI y con medidas de ansiedad y depresión. Conclusiones: el S-GPTS posee propiedades psicométricas adecuadas para proporcionar una medida válida de la ideación delirante en población española.

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