Emotional and Psychological Factors: Constant concentration and public contact, occasional exposure to hazardous materials, frequent exposure to emergency situations, including trauma, grief, and death, decision-making, working weekends and nights, occasional work at heights, working alone, and overtime. Theory, techniques, and practices of nursing, new developments in patient care, particularly in the area of specialization, skills specific to clinical scope of practice, the nursing process, nursing staffing patterns, principles and practices of employee supervision, health care safety principles and practices.