The responsivity principle is one of the elements in the risk-need-responsivity model that has become well established in social work targeted at recidivism. Irrespective of its proven effect for offender rehabilitation, the responsivity principle is the least researched of the model’s three principles. The aim of the present study was to research how professionals within social intervention teams adhere to the responsivity principle and what strengths and challenges they perceive in adhering to it. Nine qualitative, semi-structured interviews were carried out with professionals and analysed through a thematic analysis. The results suggest that adhering to the responsivity principle requires a focus on both the client's responsivity for interventions as well as the professionals' responsivity to facilitate needed adaptations. Furthermore, the results show that the professionals understand the responsivity principle as foundational in enabling individuals to assimilate the support provided while also having its challenges such as identifying what factors affect one's responsivity and having the resources and prerequisites needed to facilitate the adaptations.