Scoring sheets present the percentiles for the normative sample by sex and age (18–34, 35–49, 50–64, and 65–81 years old). Complete instructions for scoring and interpreting the scale are provided. Age range: See also the Barkley Deficits in Executive Functioning Scale--Children and Adolescents (BDEFS . Complete instructions for scoring and interpreting the scale are provided. What does it do?: Provides an ecologically valid assessment of executive functioning deficits in daily life Missing: Pdf