 Therapeutic patient education programs TPE to type 1 diabetic adolescents are designed to make the teenager to self manage their disease and their treatment. Based on Banduras social cognitive theory, effects of educational activities for TPE should lead to the strengthening of self-efficacy, coupled with other socio-cognitive factors favoring adherence and a better quality of life for teenager. However, socio-cognitive determinants and mechanisms to achieve this, implemented by adolescents during and after the TPE program, are not sufficiently documented and French assessment tools are missing. 