01176nas a2200121   4500008003900000245009200039210006900131300001100200490000700211520076500218100001900983856005201002       2014                          d00aA Sequential Procedure for Detecting Compromised Items in the Item Pool of a CAT System0 aSequential Procedure for Detecting Compromised Items in the Item  a87-1040 v383 a<p>
	To maintain the validity of a continuous testing system, such as computerized adaptive testing (CAT), items should be monitored to ensure that the performance of test items has not gone through any significant changes during their lifetime in an item pool. In this article, the author developed a sequentially monitoring procedure based on a series of statistical hypothesis tests to examine whether the statistical characteristics of individual items have changed significantly during test administration. Simulation studies show that under the simulated setting, by choosing an appropriate cutoff point, the procedure can control the rate of Type I errors at any reasonable significance level and meanwhile, has a very low rate of Type II errors.</p>
1 aZhang, Jinming  uhttp://apm.sagepub.com/content/38/2/87.abstract