Children's Health Locus of Control Scale (CHLC) Few but definitions not specific enough Has adequate reliability, construct validity and internal consistency. Children's Health Locus of Control Scale Multiple countries and cultural groups Children and Adolescents Healthy Children; Children with Medical Conditions no Self English, Russian, a 9- item shorter Egyptian version CHLC A measure that seeks to determine the extent to which children and adolescents believe their own health-related behaviors will influence their health. It is a 20 item scale that contains 3 additional practice items and is a yes or no format. It contains 3 factors: belief in internality, belief in powerful others and belief in chance. There is a shorter 9-item version of the scale which is comparable to the full version and adapted for use in Egyptian children. Abdel Gawwad E, Ahmed MH, Kamal MM. Developing and testing of an Egyptian version of Children's Health Locus of Control scale. J Egypt Public Health Assoc. 1999; 74(1-2):139-73. Parcel G.S. and Meyer M.P. (1978) Development of an instrument to measure children's health locus of control. Health Education Monographs, 6, 149-159. Deaux EB. Health Locus of Control in Chukotka children. Alaska Med. 1992 Jul-Sep; 34(3):135-9. Quality of Life and Care Measure