A QOLI (Quality of Life of Insomniacs) questionnaire was administered to psychology students from UCDB for the purpose of comparing the life quality of insomniac and non-insomniac students by way of the following variables: quality of sleep, quality of awakening, physical state, psychological mood/state of mind, relationships (family, professional/academic and social). Students were considered as insomniacs according to the following criteria: a history of insomnia of from 2 weeks to 3 months; two or three of the following criteria: total night's sleep of less than 6 hr; at least two awakenings in the early morning; a sleep latency (period needed to fall asleep) greater than 30 min; additional sleep during the day, owing to the insomnia; absence of any somatic cause and/or treatment for insomnia. The statistical analysis was done comparing the average scores of each of the variables taken from the two groups, by way of the Student's t-test. It was concluded that insomnia affected the physical well-being, psychological mood/state of mind and relationships (family, professional/academic and social) of the psychology students from UCDB and, thus, their quality of life.