High Quality Content by WIKIPEDIA articles! The Behavior Rating Inventory of Executive Function (BRIEF), developed by Drs. Gerard Gioia, Peter Isquith, Steven Guy, and Lauren Kenworthy, is an assessment of executive function behaviors at home and at school for children and adolescents ages 5–18. The questionnaire is administered to parent- and teacher- informants and takes 10–15 minutes to administer, and 15–20 minutes to score. Other versions of the BRIEF measuring executive function in preschool children (BRIEF Preschool 3–5 years), school-age children using self-report (BRIEF Self-Report 13–18 years), and adults (BRIEF Adult 18–90 years) are also available.