There is no way for a practicing physician or psychologist to avoid some contact with the legal system. Eventually, all practicing physicians or psychologists will have a patient who needs a report for disability determination, competence to make a will or enter a contract, damages for compensation, health insurance claims, child custody cases, or educational entitlements; or, more rarely, in the case of alleged criminal acts, you may be called upon to give an opinion regarding insanity, diminished capacity, mental retardation, or mitigating factors. One need not be a forensic specialist to receive a subpoena for records, a deposition, or courtroom testimony. In the course of evaluating or treating patients, most practitioners will also be exposed to the results of psychological and neuropsychological testing reports. A basic understanding of evidence-based assessment and statistical reasoning, the difference between likely, probable, and certain, in statements of causation, and the meaning of legal terms of art have become necessary in this litigious age.