espanolEl objetivo de este estudio fue analizar las propiedades psicometricas de la Escala de Autoeficacia Generalizada (GSES) en cuidadores no profesionales. Tres psicologas entrenadas recogieron los datos sociodemograficos y de la situacion de cuidado, la GSES, la CES-D, el ATQ-30 y la EPQ-R en 592 cuidadores (87.16% mujeres; edad media =55.41 anos). Posteriormente, dos expertos en evaluacion y diagnostico valoraron el diagnostico de episodio depresivo mayor, usando el SCID-5. La muestra total se dividio aleatoriamente en dos grupos para el analisis factorial exploratorio (AFE) y el analisis factorial confirmatorio (AFC). La consistencia interna fue de α=.90. Un unico factor explico el 74.17% de la varianza total. Se encontraron correlaciones de la autoeficacia con extraversion, neuroticismo, sintomatologia depresiva y pensamientos automaticos negativos. La GSES discrimino entre cuidadores deprimidos y no deprimidos clasificando correctamente el 68% de los casos. ≤28 resulto un punto de corte adecuado para discriminar los cuidadores con o sin depresion. La GSES resulto un instrumento fiable y valido para evaluar la autoeficacia generalizada en cuidadores no profesionales. EnglishThe aim of this study was to analyse the psychometric properties of the Generalized Self-Efficacy Scale (GSES) in non-professional caregivers. Three trained psychologists collected the sociodemographic data and information on the situation of care, GSES, CES-D, ATQ-30 and EPQ-R of 592 non-professional caregivers (87.16% women, average age =55.41 years). Subsequently, two experts in assessment and diagnosis assessed a major depressive episode diagnosis using the SCID-5. The total sample was randomly divided into two groups for exploratory factor analysis (EFA) and confirmatory factor analysis (CFA). The internal consistency was α=.90. A single factor explained 74.17% of the total variance. Self-efficacy was correlated with extraversion, neuroticism, depressive symptomatology, and negative automatic thoughts. The GSES discriminated between depressed and non-depressed caregivers by correctly classifying 68% of the cases. The value of ≤ 28 on the GSES was determined to be an appropriate cut-off point to discriminate between caregivers with or without depression. The GSES is a reliable and valid instrument to assess the generalized self-efficacy of non-professional caregivers.