Analysis of the Parenting Stress Index-Short Form on Parents of Children with Intellectual Disabilities with the Rasch Model

This study presents the results obtained after analyzing the psychometric properties using Rasch model of the Spanish version of the Parenting Stress Index-Short Form for use with parents or guardians of children with intellectual disabilities. The study was conducted with 542 participants, of whom 31.3% were male and 68.7% female, with an average age of 54.2 years, who responded to the scale of their relatives with disabilities aged 4 to 72 years, and an average of 30.8 years. The results support the existence of high reliability. The resulting model explains 40.9% of the variance. The items tend to measure medium-high levels of parental stress. Differential Item Functioning suggests the existence of minor differences based on gender. Dimensionality analysis suggests that the measure is unidimensional in nature.