This assignment delves into the concept of duty of care, a legal obligation to provide reasonable care while performing acts that could foreseeably fail to protect. It covers significant cases such as Donoghue vs. Stevenson, Caparo vs. Dickman, and Mcloughlin vs. O'Brien, highlighting the evolution of duty of care in tort law. The assignment also examines the tests and criteria for determining whether a party has a reasonable proximity relationship with another, including the Caparo test and the Alcock test/criteria for recoverability of psychiatric damage. It concludes by emphasizing the importance of applying these tests to establish a duty of care and award compensation when professional negligence claims meet the required standards.