NCSBN develops two licensure examinations, the NCLEX-PN and the NCLEX-RN, that are used by nursing regulatory bodies to assist in making licensure decisions. The exam uses computer adaptive testing (CAT) to measure the competencies needed to perform safely and effectively as a newly licensed, entry-level nurse. CAT is a method for administering exams that merges computer technology with modern measurement theory to increase the efficiency of the exam process. This video explains why CAT is used for NCLEX and how it works. Topics covered include item selection and pass/fail rules. Find out more about the exam and CAT.