The defense team must conduct an ongoing, exhaustive, and independent investigation of every aspect of the client’s character, history, record, and any circumstances of the offense, or other factors that may provide a basis for a sentence less than death. In accordance with the ABA Guidelines for death penalty cases, the investigation into a client’s life history must survey a broad set of sources and include, but not be limited to: medical history; complete prenatal, pediatric, and adult health information; exposure to harmful substances in utero and in the environment; substance abuse history; mental health history; maltreatment and neglect history; trauma history; educational history; employment and training history; military experience; multi-generational family history, genetic disorders and vulnerabilities, as well as multi-generational patterns of behavior; prior adult and juvenile correctional experience; and religious, gender, sexual orientation, ethnic, racial, cultural, and community influences, along with socio-economic, historical, and political factors.
Team members, including a capital case mitigation specialist, must conduct in-person, face-to-face, one-on-one interviews with the client, the client’s family, and other witnesses who are familiar with the client’s life or family history and who would support a sentence less than death. Multiple interviews will be necessary to establish trust, elicit sensitive information, and conduct a thorough and reliable life-history investigation. Team members must endeavor to establish the rapport with the client and witnesses that will be necessary to provide the client with a defense in accordance with constitutional guarantees relevant to a capital sentencing proceeding.
Additionally, team members must provide counsel with documentary evidence of the investigation through the use of methods such as genealogies, social history reports, chronologies, and reports on relevant subjects, including, but not limited to, cultural, socioeconomic, environmental, racial, and religious issues in the client’s life. The manner in which information is provided to counsel is determined on a case-by-case basis, in consultation with counsel, considering jurisdictional practices, discovery rules, and policies. The role of a life history investigator is crucial in gathering comprehensive insights that can aid as a sentencing advocate in these sensitive cases.