“…, Twenty (21) items (53%) that is items 1,3,4,6,8,9,12,14,16,19, 20, 21, 22, 23, 25, 26, 28,33, 37, 39, and 40 did not fit the three-parameter model because the items were below .05 level of significance. Nineteen (19) items (47%) that is, items 2, 5, 7, 10, 11, 13, 15, 17, 18, 24, 27, 29, 30, 31, 32, 34, 35, 36, and 38 fitted the three-parameter model because the items were above .05 level of significance.…”