1 Department of Psychology, College of Human and Health Sciences, Swansea University, Singleton Park, Swansea, SA2 8PP, Wales, UK; Centre for Human Psychopharmacology, Swinburne University, Hawthorn, Melbourne, VIC 3122, Australia. Electronic address: a.c.parrott@swansea.ac.uk.
2 Department of Psychology, College of Human and Health Sciences, Swansea University, Singleton Park, Swansea, SA2 8PP, Wales, UK; Centre for Human Psychopharmacology, Swinburne University, Hawthorn, Melbourne, VIC 3122, Australia.