The chapter "Usability Inspection Methods" by Jakob Nielsen discusses various methods for evaluating user interfaces to identify usability issues. Usability inspection is a cost-effective, informal approach that has gained popularity since the mid-1990s. The chapter outlines four main evaluation methods: automatic, empirical, formal, and informal. While automatic methods are often ineffective, formal methods are complex and difficult to scale, making empirical methods the primary choice. However, user testing can be costly and time-consuming, leading to the use of inspection methods as a cost-effective alternative. The chapter highlights that combining multiple methods, such as heuristic evaluation, cognitive walkthroughs, feature inspection, and standards inspection, can yield the best results. Heuristic evaluation, the most informal method, involves usability specialists assessing each interface element against established principles. Other methods, like pluralistic walkthroughs and consistency inspections, involve group evaluations. The chapter also emphasizes the importance of early inspection in the usability engineering lifecycle and the role of regular developers or usability specialists in conducting these inspections.The chapter "Usability Inspection Methods" by Jakob Nielsen discusses various methods for evaluating user interfaces to identify usability issues. Usability inspection is a cost-effective, informal approach that has gained popularity since the mid-1990s. The chapter outlines four main evaluation methods: automatic, empirical, formal, and informal. While automatic methods are often ineffective, formal methods are complex and difficult to scale, making empirical methods the primary choice. However, user testing can be costly and time-consuming, leading to the use of inspection methods as a cost-effective alternative. The chapter highlights that combining multiple methods, such as heuristic evaluation, cognitive walkthroughs, feature inspection, and standards inspection, can yield the best results. Heuristic evaluation, the most informal method, involves usability specialists assessing each interface element against established principles. Other methods, like pluralistic walkthroughs and consistency inspections, involve group evaluations. The chapter also emphasizes the importance of early inspection in the usability engineering lifecycle and the role of regular developers or usability specialists in conducting these inspections.