Self-review and peer review are processes used to evaluate and improve work. Self-review involves individuals rating their own work, while peer review involves experts in a field evaluating each other's work to maintain quality. Peer review aims to reduce bias and obtain objective evaluations. It provides incentives for excellence through rewards and punishments related to prestige, publication, grants, jobs, pay, and promotion. Higher order thinking skills (HOTS) involve more complex cognitive processing like analysis, evaluation and synthesis compared to memorizing facts, and require different teaching methods.