01221nas a2200157   4500008004100000245006600041210006600107300001200173490000600185520069800191653003400889100002400923700001400947700001600961856008600977       1992                        eng d00aAltering the level of difficulty in computer adaptive testing0 aAltering the level of difficulty in computer adaptive testing  a137-1490 v53 aExamines the effect of altering test difficulty on examinee ability measures and test length in a computer adaptive test. The 225 Ss were randomly assigned to 3 test difficulty conditions and given a variable length computer adaptive test. Examinees in the hard, medium, and easy test condition took a test targeted at the 50%, 60%, or 70% probability of correct response. The results show that altering the probability of a correct response does not affect estimation of examinee ability and that taking an easier computer adaptive test only slightly increases the number of items necessary to reach specified levels of precision. (PsycINFO Database Record (c) 2002 APA, all rights reserved).10acomputerized adaptive testing1 aBergstrom, Betty, A1 aLunz, M E1 aGershon, RC  uhttp://mail.iacat.org/content/altering-level-difficulty-computer-adaptive-testing