Empowerment is a widely accepted approach to health promotion in which primary care nurses play an important role. Despite its clinical importance, empirical knowledge is low, mainly due to the lack of instruments to measure this construct. The Empowering Speech Practices Scale (ESPS) is a Finnish measure used to assess the empowerment process in counselling sessions. We designed this study to assess the psychometric properties of a Portuguese adaptation of the ESPS for families of 5-year-old children and nurses in well-child visits.