Hooper and Larsson aim to describe the research journey of ACT so far and map out directions for future research. The clear and logical structure of the book certainly helps the reader to use it in this way. I think the book is likely to appeal to both researchers and clinicians, whether they are experienced in ACT or are just curious to learn more about the approach and the current state of the evidence base. (Pamela Jacobsen, The Journal of Critical Psychology, Counselling and Psychotherapy, Vol. 16 (3), September, 2016)