A debate is emerging in the UK and elsewhere about the possible role of cooperatives and mutuals in building a better economy. But what makes for good performance by a co-op or mutual? What values should enterprises of this kind seek to embody or promote? How can they do it? These questions are, in part, questions about the underlying moral and political philosophy of co-operatvism and mutualism. A British Academy-funded research project, currently being run at Kellogg College’s Centre for Mutual and Employee-Owned Business, aims to explore these questions and develop a framework for evaluating cooperative and mutual performance. The research team would like to know what you think of their ideas. We invite your comments below each article.