User participation in information systems development (ISD) has long been linked to systems success. Prior research has focused on identifying a range of contingencies such as task complexity, systems complexity, user influence, user-developer communication, and type of involvement etc. However, very little is known about the development and maturation of groups in (ISD) contexts. The purpose of this study is to examine the relationship between user participation and systems success from a developmental perspective. Using group development as a theoretical lens, a descriptive case study of two groups engaged in sequential user-centered design projects was conducted. The results revealed that social and cognitive forces constrained the development of both groups, resulting in a negative impact on the (ISD) outcomes. This study extends the (ISD) literature by proposing a model that links group development and systems success in ISD contexts.