The aim of this interdisciplinary (conceptual-philosophical, media-theoretical, and qualitative-empirical) program is to investigate if, and if so, to what extent and in what way, digital information and communication technologies are transforming the (construction of) personal and cultural identity. To that end we will develop a theory of ludic identity that critically elaborates on Ricoeur's theory of narrative identity. In this theory play and games are not only appropriate metaphors for human identity, but they are also conceived of as means by which people reflexively construct their identity. The theory of ludic identity, the outlines of which have been sketched in some of the principal applicantâ€™s previous publications, will be further developed and critically evaluated in three case studies (three PhD projects) focusing on (the domestication of) three different media, respectively: 1. mobile phones, 2. websites, and 3. computer games. Each case study will examine the way the medium-specific characteristics shape and are being shaped by the participation of the user, and on the implications of this for the reflexive construction of personal and cultural identities. By way of dialectical counterpoint, in each of the case studies the practice of reflexive identity construction will be confronted with a specific development that threatens to subject this reflexive self-construction to the logic of an external system (respectively processes of commercialization, globalization and homogenization). The applicants will not only act as the supervisors of the PhD projects, but will also write a synthetic monograph in which the results of the case studies will be integrated and situated in a wider context of historical and philosophical approaches to culture.