Mental health and human service professionals are often called on to give evidence or expert testimony in a range of circumstances, including family law and child welfare trials, mental health hearings, malpractice lawsuits, criminal trials, government hearings, and private arbitration. Interacting with the legal system poses many potential challenges, but adequate preparation and a basic understanding of legal processes and terminology can make the experience a more positive one. This volume provides practical information and proven guidelines to help clinicians from any background understand their role in legal proceedings-and participate effectively, ethically, and with minimal stress. Special features include helpful checklists and samples of affidavits, retainer agreements, and other materials that can be adapted for use in the reader's own practice.