Prosenjit Poddar, a student at the University of California, Berkeley, underwent psychotherapy at the university's counseling center. During sessions with psychologist Dr. Lawrence Moore, Poddar expressed his intention to kill a young woman, Tatiana Tarasoff, with whom he had pursued a relationship that she did not reciprocate. Concerned, Dr. Moore informed his supervising psychiatrist and notified campus police, recommending civil commitment. Police detained Poddar briefly but released him after concluding he appeared rational and had promised to stay away from Tarasoff. The clinicians did not warn Tarasoff or her family, and senior staff allegedly directed that notes indicating the danger be destroyed and that no further action be taken. Months later, in October 1969, Poddar stabbed and killed Tarasoff at her home. Tarasoff's parents sued the Regents of the University of California, the therapists, and campus police, alleging negligence in failing to warn, protect, and otherwise act reasonably to prevent the foreseeable harm. The trial court sustained demurrers in favor of all defendants; the California Supreme Court granted review and, on rehearing, issued the opinion commonly known as Tarasoff II.
Do psychotherapists owe a duty of care to protect reasonably identifiable third parties from a patient's serious threats of violence communicated during treatment, notwithstanding the general principle of confidentiality?
When a therapist determines, or pursuant to the standards of the profession should determine, that a patient presents a serious danger of violence to another, the therapist has a duty to use reasonable care to protect the intended victim against such danger. The duty arises when a patient communicates a serious threat of physical violence against a reasonably identifiable victim. Reasonable protective measures may include warning the intended victim or others likely to apprise the victim of the danger, notifying law enforcement, or taking other steps reasonably necessary under the circumstances. The protective privilege ends where public peril begins; professional confidentiality does not bar reasonable disclosures necessary to prevent threatened violence.
The California Supreme Court held that psychotherapists owe a duty to exercise reasonable care to protect reasonably identifiable potential victims when a patient makes a serious threat of violence. The court reversed the dismissal of claims against the therapists and the Regents, allowing the negligence action to proceed. Claims against the campus police were properly dismissed based on statutory immunity for their discretionary decision not to detain the patient.
The court grounded its analysis in the general duty principles of Rowland v. Christian, weighing factors such as foreseeability of harm to the plaintiff, certainty of injury, the closeness of the connection between the defendants' conduct and the injury, moral blame attached to the conduct, the policy of preventing future harm, the burden to the defendant and consequences to the community of imposing a duty, and the availability of insurance. The threat to Tatiana Tarasoff was specific, credible, and grave: Poddar had communicated to his therapist an intent to kill a known, identifiable person. The harm suffered was certain and directly connected to the alleged failures to warn or take other reasonable steps. Imposing a duty promotes the policy of preventing future harm because minimal protective measures—such as warning the intended victim or notifying authorities—can avert catastrophic violence. The court rejected the argument that strict confidentiality or the psychotherapist-patient privilege defeats a duty to protect. Confidentiality is not absolute. California's Evidence Code already recognized an exception permitting disclosure when a therapist reasonably believes disclosure is necessary to prevent danger, reflecting a policy judgment that safety can trump privilege in narrow circumstances. The court emphasized that the therapeutic relationship can coexist with a carefully tailored duty focused on serious, specific threats to identifiable victims. Although predicting dangerousness is imprecise, the law does not demand omniscience; it requires reasonable professional judgment and action commensurate with the risk. The duty arose from the special relationship between therapist and patient, which created an ability and responsibility to take steps to prevent harm, akin to recognized duties to control or warn in other special-relationship settings. The court distinguished this from generalized duties to protect the public at large; the duty is limited to reasonably identifiable victims and serious threats. As to campus police, the court concluded their decision to release Poddar fell within statutory discretionary immunity, insulating them from liability. The court therefore reinstated the negligence claims against the therapists and the Regents while affirming dismissal as to the police.
Tarasoff crystallized a duty to protect third parties in the context of mental health treatment and recast the therapist's obligations from a narrow duty to warn into a broader duty to take reasonable steps to protect. It remains central in torts courses for its nuanced use of the Rowland duty factors, its treatment of special relationships, and its balancing of confidentiality against public safety. The decision influenced nationwide statutes and case law, many of which codify or modify the Tarasoff duty; some jurisdictions require warnings, others permit disclosures, and a few reject an affirmative duty, making Tarasoff a springboard for comparative analysis. For practitioners and students, Tarasoff underscores risk management in clinical practice: document assessment of threats, evaluate identifiability and seriousness, and implement reasonable protective measures. It also illustrates how common-law duty can adapt to evolving professional norms and societal concerns about violence prevention.
Tarasoff v. Regents of University of California stands as a foundational case in tort law for articulating when and how a professional's special relationship with a patient can generate an affirmative duty to protect third parties. By requiring therapists to act reasonably in the face of serious, specific threats to identifiable victims, the court reconciled the competing values of confidentiality and public safety and advanced a preventive approach to catastrophic harm.