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The session covers re-estimation of ability after every response, selection of appropriately targeted next items, and the objective of maximizing information about true proficiency. It further outlines REx-PN CAT components including variable-length exams, content balancing by operational item percentages, and exam stopping rules, with example confidence intervals supporting the measurement process.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":20,"@type":76,"position":81},"https://docshare.wps.com/document/exam/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/rex-pn-cat-overview-of-computerized-adaptive-testing/501486/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/rex-pn-cat-overview-of-computerized-adaptive-testing/501486.png","ImageObject",300,407,{"name":92,"@type":93},"Mia  ","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-19","2026-10-03",true,{"@type":102,"interactionType":103,"userInteractionCount":29},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"How does CAT adapt an exam to each candidate?","Question",{"text":112,"@type":113},"After each item, the system re-estimates the candidate’s ability using all previous answers and item difficulties, then selects the next item targeted to that ability level.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What does “variable length exam” mean in REx-PN® CAT?",{"text":117,"@type":113},"The number of questions depends on the candidate’s ability: shorter exams occur when ability is far from the passing standard, while longer exams occur when it is close to the passing standard.",{"name":119,"@type":110,"acceptedAnswer":120},"How is content balancing handled in REx-PN® CAT?",{"text":121,"@type":113},"The REx-PN test plan specifies a required percentage of operational items in each content area, ensuring balanced representation across content areas.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},501486,1791342915,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":19,"category_name":20,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":29,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145},687207024478,"https://ap-avatar.wpscdn.com/davatar_a8503ba1806abce46bf441b54a3ca4cd","Computerized Adaptive Testing (CAT)  \nShu-chuan Kao, PhD, Senior Manager, Measurement &  \nTesting  \nObjectives  \nBy the end of the session, participants will be able to:  \n• Understand how Computerized Adaptive Testing (CAT) works  \n• Recognize REx-PN® CAT components  \n• Variable Length Exam  \n• Content Balancing  \n• Exam stopping rules  \nWhat is “Adaptive”testing?  \nExams are customized for individual candidates. The difficulty of each test is tailored to the person taking it.  \n! High-ability candidates will receive more difficult items! Easy items provide little information about a high  \nperformer’s ability  \n! Low-ability candidates will receive fewer difficult items! Avoid guessing on items that are too difficult  \nWhat is “Adaptive” testing? (Cont.)  \n• Every time you answer an item, the computer re-estimates your ability based on all the previous answers and the difficulty of those items .  \n• Then the computer selects the next item that the candidate has a 50/50 chance of a correct response .  \n• Items are not too easy or too hard  \n• The goal is to get as much information as possible about your true ability  \n• You should find each item challenging as each item is targeted to your ability  \nWhat is “Adaptive” testing? (Cont.)  \n• When you answer more items, the computer re-estimates your ability immediately and the estimate becomes more precise .  \nAnswer  \nAnswer  \nRe-estimate candidate’s ability  \nMore precise ability estimate  \nExample of CAT  \nHard High  \nItem difficulty  \nEasy Low  \n Item administered  \n Ability estimate  \n Correct response  \n95% Confidence interval  \n Incorrect response  \n0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15  \nNumber of operational items  \nComponents of REx-PN® CAT  \nVariable Length Exam  \nContent Balancing  \nExam Stopping Rules  \nVariable Length Exam  \nThe number of questions depends upon their ability:  \nMinimum: 90 (60 operational + 30 pretest) items  \nMaximum: 150 (120 operational + 30 pretest) items  \n• Shorter length exams-ability is “far” from the passing standard (clearly above or clearly below)  \n• Longer length exams-ability is “close” to the passing standard  \nContent Balancing  \n• The REx-PN Test Plan dictates a specific percentage of the operational items in each content area  \nContent Balancing  \n!\"\\#\"$%&'\" \\#)\"*+'\\#\"'\\# ,$\", \\#),\\#  \n-&..\"$/ \\#)\" %+/\\#.$+% \\#)\" \\#\"/\\# 01,'/0\"*&.&*,\\#&+'/  \n2-\"'\\#&.3 &\\#\"%/ &' \\#)\"*+'\\#\"'\\# ,$\",,'-  \n/\"1\"*\\# ,' &\\#\"% 4&\\#)  \n-&..&*51\\#3 \\#),\\#  \n%,\\#*)\"/ \\#)\" ,6&1&\\#3  \n\"/\\#&%,\\#\"  \n!\"\\#$% '\\#$( \\#)*$ '+ '+\\# *,-\\# \". \\#/$ +$0$1\\#'\"2 ,03\"-'\\#/(+","cbCaih96ppH2HGKs","https://ap.wps.com/l/cbCaih96ppH2HGKs","pdf",814289,23,"English","# Objectives\n# What is “Adaptive” testing?\n## Adaptive logic during the exam\n# Example of CAT\n# Components of REx-PN® CAT\n## Variable Length Exam\n## Content Balancing\n## Exam Stopping Rules","[{\"question\":\"How does CAT adapt an exam to each candidate?\",\"answer\":\"After each item, the system re-estimates the candidate’s ability using all previous answers and item difficulties, then selects the next item targeted to that ability level.\"},{\"question\":\"What does “variable length exam” mean in REx-PN® CAT?\",\"answer\":\"The number of questions depends on the candidate’s ability: shorter exams occur when ability is far from the passing standard, while longer exams occur when it is close to the passing standard.\"},{\"question\":\"How is content balancing handled in REx-PN® CAT?\",\"answer\":\"The REx-PN test plan specifies a required percentage of operational items in each content area, ensuring balanced representation across content areas.\"}]","REx-PN CAT - Overview of Computerized Adaptive Testing | PDF",1791019773,58]