Exploring User-Centred Design in practice: Some caveats.

This paper provides a nuanced perspective on the topic of user-centred design (UCD) in the human– computer interaction (HCI) field. After a brief outline of its emergence, we describe some of the central tenets of the approach, using the process model of Gulliksen et al. (Behav Inf Technol 22(6):397–409, 2003) as a welldocumented exemplar. We then examine in more detail some of the difficulties one can encounter in performing user-centred design (UCD), illuminating these issues through vignettes from specific projects in which we have been involved. In this paper, we focus on issues that can arise in working with children and with people of differing mental abilities. Our argument is that, while a user-centred perspective is required at all times in the design team, the forms of participation of users in the design process needs to fit the context and can vary significantly from that presented as the prototypical UCD approach.