BACKGROUND: Perceived self-efficacy is a predictor of behaviour and therefore an important dimension of resuscitation training which may have consequences for patient care. The Advanced Paediatric Life Support (APLS) course makes use of techniques which would be expected to increase self-efficacy. We examined the effect of this course on perceived self-efficacy in respect of resuscitation skills and on the use of these skills. DESIGN: A prospective descriptive study using a questionnaire. METHODS: Questionnaires were sent to all doctor candidates following the course in the Netherlands over a period of 15 months and to a matched control group. Perceived self-efficacy in respect of paediatric resuscitation as a whole and six of its component skills was measured on a visual analogue scale. Questionnaires were sent out before the course and 3 and 6 months afterwards. FINDINGS: The candidate and control groups were not significantly different in terms of sex, specialty, grade or experience with children. Perceived self-efficacy increased significantly (p