The WAIS, WISC, and Stanford-Binet are among the most recognizable intelligence assessments in psychology, but knowing when to use each instrument is only the beginning. This episode examines their age ranges, theoretical foundations, index scores, and clinical applications while explaining how fluid reasoning, working memory, processing speed, and crystallized intelligence influence test interpretation. Learn the critical distinctions, common examination traps, and practical assessment principles every EPPP candidate should understand.