The aim of this project is to study the psychological effect of Continuous Subcutaneous Insulin Infusion (CSII) in a cohort of type 1 diabetic patients and to explore the influence of psychological factors (coping style, locus of control, self-efficacy) on glycaemic control. A sample of 36 type 1 diabetic patients will be recruited at Endocrinology, Diabetes and Metabolism Division of Verona City Hospital.