The Survey Form of the Leyton Obsessional Inventory-Child Version: Norms from an Epidemiological Study

In the first stage of a two-stage epidemiologic study of obsessive compulsive symptoms in nonreferred adolescents, 81.3% of a county-wide population of high school students ( N = 5596) completed a survey form of the Leyton Obsessional Inventory—Child Version. The 20-item self report inventory demonstrated good psychometric properties. Females scored slightly higher than males both for number of obsessional habits and degree of interference. At least 46% of the students reported ‘obsessional habits' in relation to cleanliness; less than 17% of students reported obsessional habits in relation to school work, numbers and luck. The entire sample rated obsessional schoolwork habits and indecisiveness as causing the most interference with their lives, while neatness and having a favorite number bothered them the least.