NIC HOOPER is Lecturer in Psychology at Cardiff University. He was previously Senior Lecturer in Psychology at the University of the West of England (UWE), and earlier spent two years teaching at Middle East Technical University in Northern Cyprus. He has written many articles and book chapters, and he is the lead author of The Research Journey of Acceptance and Commitment Therapy (2015). From 2015-17 he sat on the board of the Association for Contextual Behavioral Science (ACBS), which governs much work in ACT and related areas. FREDDY JACKSON BROWN is a registered and chartered clinical psychologist with twenty years' experience working with children and families in the NHS. He has published a range of peer-reviewed articles and book chapters on ACT, behaviour analysis, disability and sexuality, and is the author of Get the Life You Want (2013) and ACT for Dummies (2016).