Book excerpt: The fourth edition of Mastering the Instructional Design Process has been completely revised and updated and is based on the instructional design competencies of the International Board of Standards of Performance and Instruction (IBSTPI). The book identifies the core competencies of instructional system design and presents them in a way that helps to develop these competencies and apply them successfully in real-world settings. This comprehensive resource covers the full range of topics for understanding and mastering the instructional design process including: detecting and solving human performance problems; analyzing needs, learners, work settings, and work; establishing performance objectives and performance measurements; delivering the instruction effectively; and managing instructional design projects successfully.