The 4 Ds of Forensic Mental Health Assessments of Personal Injury

The field of psychiatric/psychological injury and law concerns tort and other legal claims for injuries sustained in events at issue, such as in motor vehicle accidents (MVAs), worker compensation, or the veteran affairs (VA). The 4 Ds refer to the requirement that legal action in these types of cases can proceed when there is a duty, the duty has been discharged with dereliction, the resultant act has caused directly tortious harm, and damages are applicable. In contrast, the related 4 Cs refer to the conditions of effective forensic testimony. The principles of forensic mental health assessment (FMHA; Heilbrun et al., 2009) underscore the scientific requirements in forensic assessments, as do the American Psychological Association’s (APA, 2013) forensic specialty guidelines. For example, Brodsky’s maxims for effective work in court (Brodsky & Gutheil, 2016) cover a broad spectrum of ethical and practice guidelines for the profession. Similarly, Young (2016 a, b, c) has specified the parameters of admissible evidence in court, functioning ethically for the court, and the need to be comprehensive, scientifically informed, and impartial in forensic mental health assessments. All these sources lead to an integrated set of the principles for effective and ethical practice in the forensic arena of mental health work, referred here as the 4 Ds for the field of psychiatric/psychological injury and law. These revised 4 D principles involve Dignity, Distance, Data, and Determinations.