Objective: The aim of this paper was to discuss differences between having a child perspective and taking the childs perspective based on the problem being investigated. Methods: Conceptual paper based on narrative review. Results: The childs perspective in research concerning children that need additional support are important. The difference between having a child perspective and taking the childs perspective in conjunction with the need to know childrens opinions has been discussed in the literature. From an ideological perspective the difference between the two perspectives seems self-evident, but the perspectives might be better seen as different ends on a continuum solely from an adults view of children to solely the perspective of children themselves. Depending on the research question, the design of the study may benefit from taking either perspective. In this article, we discuss the difference between the perspectives based on the problem being investigated, childrens capacity to express opinions, environmental adaptations and the degree of interpretation needed to understand childrens opinions. Conclusion: The examples provided indicate that childrens opinions can be regarded in most research, although to different degrees.