No one doubts the importance of trust in psychotherapy, but few therapists think about the complexities of trusting relationships, and the trustworthiness that would justify trusting remains far from view. Fortunately, inasmuch as trusting and trustworthiness are inherently ethical concepts, contemporary philosophers have given trust the consideration it warrants. Integrating science and philosophy, the author reviews the broad scope and multifaceted nature of trust and trustworthiness, the social-cognitive development of trust, and the development of distrust in the context of borderline personality disorder. Without questioning therapists' character, the author makes the case for shifting the emphasis from the patient's distrust to the therapist's challenge to become trustworthy in the course of each treatment relationship and, more broadly, over the course of a professional career.
Keywords: attachment; borderline; development; distrust; ethics; trust; trustworthiness.