The third section reviews in detail the evolving delineation of the psychiatric competencies within each of the six categories of core competencies identified by the Accreditation Council for Graduate Medical Education (ACGME) and the American Board of Medical Specialties (ABMS). These six chapters, each written by a highly accomplished academic psychiatrist, are clear and convincing descriptions of the knowledge and skills psychiatrists should possess in each category. The six categories are patient care, medical knowledge, interpersonal communication skills, practice-based learning and improvement, professionalism, and system-based practice. Neurology-specific competencies for psychiatrists are part of the patient care category but in this report are discussed in a separate chapter called "Cross Competencies: What Psychiatrists Should Know About Neurology." It is perhaps a reflection of the difficulty of this topic for the field that educators and clinicians are not likely to find this chapter as helpful as the others in guiding curriculum development or continuing education. For example, to indicate that neuroimaging and neurogenetics or molecular neurology, among other subject areas, are judged to be "of the highest priority for psychiatrists to understand fully" is too vague to be useful or, if literally interpreted, too ambitious and unrealistic.