Objective:To assess the reliability and validity of a new instrument, the Family Burden of Injury Interview (FBII) was designed to assess the impact of childhood traumatic head injuries (THI) on the family.Participants:99 Mothers of school-age children who experienced THI.Results:The FBII Total Score revealed group differences between families of children with severe THI and families of children with moderate THI. The measure also showed concurrent and predictive relationships to measures of the general impact of injury on families and maternal and child functioning.Conclusion:The FBII is a promising tool for measuring the impact of injury-related stressors on the family.