1 Department of Psychology, Swansea University, Swansea SA2 8PP, UK; Department of Psychology, Reykjavík University, Reykjavík, Iceland. Electronic address: s.o.dymond@swansea.ac.uk.
2 CAIS Living Room Cardiff, Cardiff, UK.
3 Swansea University Medical School, Swansea, UK.
4 School of Psychology & Therapeutic Studies, University of South Wales, Pontypridd, UK.
5 National Centre for Behavioural Addictions, London, UK; Division of Psychology and Language Sciences, University College London, London, UK; Department of Psychiatry, Cambridge University, Cambridge, UK.