This chapter focuses on the concept of clinical supervision in the context of nursing care, discussing in particular the dementia care of the elderly. The health care system is characterized by many different specialties, each with its specific problems to solve. In the case of nursing, care is a 24-hr ongoing process, with complex caring situations, more or less urgent, which means that it is mostly unpredictable. The chapter provides a detailed synthesis of supervision objectives and considers kinds of resources that are required to provide adequate supervision. It also talks about the influence of clinical supervision on family- and professional caregivers and outlines one of the authors′ studies, which examined organizational factors in relation to supervision. The chapter indicates how efficient interventions can encourage those who care for elderly with cognitive impairment to accept and implement new knowledge about psychosocial methods, improving the quality of care.