The relationship between locus of control and reaction to illness is empirically examined in a group of patients on haemodialysis for chronic renal failure. Results of the study suggest that patients who perceive themselves as having personal control over life events tend to have stronger feelings that their illness has made them dependent on others. There is also a greater tendency for them to exhibit more information seeking behaviour, and to adopt an active, problem-solving and intellectual approach to cope with their chronic renal failure. Relevance of the findings and implication for treatment outcome are discussed.