TitleDetection of aberrant item score patterns in computerized adaptive testing: An empirical example using the CUSUM
Publication TypeJournal Article
Year of Publication2010
AuthorsEgberink, IJL, Meijer, RR, Veldkamp, BP, Schakel, L, Smid, NG
JournalPersonality and Individual Differences
Publication Languageeng
ISBN Number01918869
KeywordsCAT, computerized adaptive testing, CUSUM approach, person Fit

The scalability of individual trait scores on a computerized adaptive test (CAT) was assessed through investigating the consistency of individual item score patterns. A sample of N = 428 persons completed a personality CAT as part of a career development procedure. To detect inconsistent item score patterns, we used a cumulative sum (CUSUM) procedure. Combined information from the CUSUM, other personality measures, and interviews showed that similar estimated trait values may have a different interpretation.Implications for computer-based assessment are discussed.