Written and edited by an international range of experts from the UK, North America and Australasia, it provides clear advice on a range of assessments, from psychometric tests to personality functioning, and includes real-life examples to illustrate key points. Uniquely, the book also offers guidance on the range of different client groups that forensic psychologists work with across both civil and legal contexts, including juveniles, female clients, couples and those with cognitive impairments. From core principles to writing style to key issues, each chapter also includes a checklist of advice and further reading. Comprehensive and practical, is a user-friendly companion to this critical and often overlooked skill, and will be essential reading for both neophyte and experienced forensic psychologists alike.