How do we persist over time: What conditions need to be fulfilled for us to remain the same person from one moment to the next? Two theories have dominated the debate for a longtime: the physical and psychological approaches, which are centred on sameness of body and sameness of psychology, respectively. This thesis will focus on a third theory, the phenomenal approach, which defines persistence as the sameness of consciousness. That is, what is required for persistence is a continuous stream of consciousness. In part 1, I will present and analyse two different arguments that advocate for the phenomenal approach and I will also offer criticism for each argument individually. In part 2 I will present criticism that is directed to both arguments and the view as a whole. I will argue that the phenomenal approach to personal identity over time is an intuitive and convincing alternative at first glance but after deeper analysis it is an inadequate and unsatisfactory argument for personal persistence. Both arguments defend the capacity for consciousness as the condition for persistence but neither is able to define what has the capacity for consciousness and how it could persist without consciousness in a meaningful way.

Certain contemporary philosophers (e.g. Dainton, 2008; Strawson, 1999; Foster, 2008) have thought that the first-person, qualitative aspect of conscious experience should be taken seriously when it comes to our thinking about personal identity through time. These philosophers have thus argued that experiential continuity is essential to a person’s ability to persist identically through time. This is what I will call ‘the phenomenological theory’. In this thesis I describe the phenomenological theory and then discuss three problems that have plagued the history of this theory: the bridge problem, the token problem, and the ontological problem. I will argue that a recent version of the phenomenological theory proposed by Barry Dainton and Timothy Bayne (2005) provides satisfactory answers to two of these problems, but not the third. I will conclude this thesis by proposing a superior version of the phenomenological theory—one that can handle all three problems.