Ida Jean Orlando developed the Nursing Process Theory which views nursing as finding and meeting patients' immediate needs for help to relieve feelings of helplessness. The theory defines key concepts like distress, nursing role, nursing actions, and outcomes. Orlando believed the nurse's role is to understand the true need underlying a patient's presenting behavior through exploration. If needs are met, the patient's condition will improve. The theory guides the nurse-patient relationship and is widely used in practice, education, and research.