The purpose of this research was to evaluate the validity and reliability of a questionnaire designed to measure the levels of psychological impairment in a group of university students, through intentional non-probabilistic sampling, with the participation of teachers and psychology experts. To avoid biases, the individual aggregate method was used and the Content Validity Coefficient (CVC) was calculated for each item, obtaining values between 0.71 and 0.99, this indicates a validity of acceptable to excellent. The reliability of the instrument was achieved through the development of a pilot test, and through an adjustment in the number of items, the reliability of the instrument was improved, increasing Cronbach's alpha coefficient from 0.908 to 0.910. This is why the questionnaire is a valid and reliable tool to measure psychological impairment in university students.
