| Test A | Test B | Test C | Test D |
---|---|---|---|---|
No. of items | 96 | 72 | 86 | 50 |
No. of distractors assessed | 288 | 216 | 258 | 150 |
Distractors with: | Â | Â | Â | Â |
   Frequency <5% n(%) | 88 (30.6) | 78 (36.1) | 109 (42.2) | 60 (40.0) |
   Discrimination ≥ 0 | 68 (23.6) | 75 (34.7) | 88 (34.1) | 48 (32.0) |
   Both | 40 (13.9) | 39 (18.1) | 60 (23.3) | 34 (22.7) |
   Frequency = 0% n(%) | 12 (4.2) | 24 (11.1) | 42 (16.3) | 21 (14.0) |
Functioning distractors per test n(%) | 172 (59.7) | 102 (47.2) | 121 (46.9) | 76 (50.7) |
Functioning distractors per item n(%) | Â | Â | Â | Â |
   None | 8 (8.3) | 11 (15.3) | 13 (15.1) | 7 (14.0) |
   One | 27 (28.1) | 30 (41.7) | 35 (40.7) | 16 (32.0) |
   Two | 43 (44.8) | 26 (36.1) | 28 (32.6) | 22 (44.0) |
   Three | 18 (18.8) | 5 (6.9) | 10 (11.6) | 5 (10.0) |
Functioning distractors per item M(SD) | 1.74 (.86) | 1.35 (.82) | 1.41 (.89) | 1.50 (.86) |
 | Test E | Test F | Test G | Total |
No. of items | 50 | 60 | 100 | 514 |
No. of distractors assessed | 150 | 180 | 300 | 1542 |
Distractors with: | Â | Â | Â | Â |
   Frequency <5% n(%) | 43 (28.7) | 62 (34.4) | 101(33.7) | 541 (35.1) |
   Discrimination ≥ 0 | 46 (30.7) | 69 (38.3) | 78 (26.0) | 472 (30.6) |
   Both | 26 (17.3) | 33 (18.3) | 44 (14.7) | 276 (17.9) |
   Frequency = 0% n(%) | 15 (10.0) | 21 (11.7) | 23 (7.7) | 158 (10.2) |
Functioning distractors per test n(%) | 87 (58.0) | 82 (45.6) | 165 (55.0) | 805 (52.2) |
Functioning distractors per item n(%) | Â | Â | Â | Â |
   None | 6 (12.0) | 8 (13.3) | 10 (10.0) | 63 (12.3) |
   One | 13 (26.0) | 25 (41.7) | 33 (33.0) | 179 (34.8) |
   Two | 19 (38.0) | 24 (40.0) | 39 (39.0) | 201 (39.1) |
   Three | 12 (24.0) | 3 (5.0) | 18 (18.0) | 71 (13.8) |
Functioning distractors per item M(SD) | 1.74 (.96) | 1.37 (.78) | 1.65 (.89) | 1.54 (.88) |