Dr Christiansen is an experimental psychologist and statistician who has been researching unhealthy decision making for ten years. His focus is on unconscious cognitive processes and how they drive unhealthy behaviour. He also explores how these process are moderated by underlying personality and motivational constructs as well as situational factors. He has published over fifty-peer reviewed research articles on these subjects. He has received funding for this work UK research councils, charity, and industry. In addition to this he has worked as a statistician on a range of projects funded by UK (Home Office, National Crime Agency) and US (FBI, CIA) government agencies.