SCREEN ID IN PERSONS WITH SUBSTANCE ABUSE PROBLEM 1 Screening for intellectual disability in persons with a substance abuse problem: Exploring the validity of the Hayes Ability Screening Index in a Dutch-speaking sample Wing Ting To 1,2 , Stijn Vanheule 3 , Wouter Vanderplasschen 2 , Kurt Audenaert 4 , & Stijn Vandevelde 2 ACCEPTED FOR PUBLICATION IN RESEARCH IN DEVELOPMENTAL DISABILITIES (29/10/2014) 1. University College Ghent, Faculty of Education, Health and Social Work Voskenslaan 362, 9000 Ghent, Belgium 2. Ghent University, Department of Special Education Henri Dunantlaan 2, 9000 Ghent, Belgium 3. Ghent University, Department of Psychoanalysis and Clinical Consulting Henri Dunantlaan 2, 9000 Ghent, Belgium 4. Ghent University, Department of Psychiatry and Medical Psychology De Pintelaan 185, 9000 Ghent, Belgium Keywords: Intellectual disability, Hayes Ability Screening index, screening, substance abuse Corresponding author: Wing Ting To Henri Dunantlaan 2 9000 Ghent, Belgium wingting.to@hogent.be /wingting.to@ugent.be