Emerging from cognitive behavioural traditions, mindfulness and acceptance-based therapies hold promise as new evidence-based approaches for helping people distressed by the symptoms of psychosis. These therapies emphasise changing the relationship with unusual and troublesome experiences through cultivating experiential openness, awareness, and engagement in actions based on personal values. In this volume, leading international researchers and clinicians describe the major treatment models and research background of Acceptance and Commitment Therapy (ACT) and Person-Based Cognitive Therapy (PBCT), as well as the use of mindfulness, in individual and group therapeutic contexts. The book contains discrete chapters on developing experiential interventions for voices and paranoia, conducting assessment and case formulation, and a discussion of ways to work with spirituality from a metacognitive standpoint. Further chapters provide details of how clients view their experiences of ACT and PBCT, as well as offering clear protocols based on clinical practice. This practical and informative book will be of use to clinicians and researchers interested in understanding and implementing ACT and mindfulness interventions for people with psychosis.