Background: The need to validate questionnaires that allow obtaining information about bullying in older people has become apparent. In Spain, no validated instrument adapted to this population has been found. The aim of this study was to validate a questionnaire to measure bullying situations among the elderly. Method: The study involved 475 elderly people aged 58 to 95 years, with an instrumental type design. The instrument consists of 22 items with Likert scale. The factor structure of the harassment questionnaire was determined with an exploratory factor analysis using the weighted least squares method. Results: Four factors were obtained. i.e., social exclusion victim, aggressor victim, verbal violence victim, and aggression-using-weapons victim and aggressor. Conclusions: The study suggests that bullying among older people exists and that it needs to be not only evaluated but also that measures for prevention and effective intervention be put in place. Antecedentes: La necesidad de validar cuestionarios que permitan obtener informaci & oacute;n sobre el acoso en personas mayores es obvia. En Espa & ntilde;a no se ha encontrado ning & uacute;n instrumento validado y adaptado a dicha poblaci & oacute;n. El objetivo del estudio ha sido validar un cuestionario para medir situaciones de acoso en personas mayores. M & eacute;todo: En el estudio participaron 475 personas mayores con edades comprendidas entre los 58 y los 95 a & ntilde;os con un dise & ntilde;o de tipo instrumental. El instrumento consta de 22 & iacute;tems en una escala tipo Likert. La estructura factorial del cuestionario de acoso se determin & oacute; mediante un an & aacute;lisis factorial exploratorio utilizando el m & eacute;todo de m & iacute;nimos cuadrados ponderados. Resultados: Se obtuvieron cuatro factores: v & iacute;ctima de exclusi & oacute;n social, v & iacute;ctima de agresi & oacute;n, v & iacute;ctima de violencia verbal, v & iacute;ctima de agresi & oacute;n con uso de armas y agresor. Conclusiones: El estudio ha demostrado la existencia de acoso entre las personas mayores y que no s & oacute;lo es necesario evaluarlo sino tambi & eacute;n aplicar medidas para la prevenci & oacute;n e intervenci & oacute;n eficaz.
