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Comparison of Different Unidimensional-CAT Algorithms Measuring Students’ Language Abilities: Post-hoc Simulation Study

Table 3:

İtem Selection Termination Rules Number Of İtemsadministered RMSD(theta) SEM Of CAT Theta Reliability
UW-FI Precision (0.30) 10.50 0.343 0.275 0,552
Precision (0.20) 24.75 0.205 0.208 0.836
Fixed 30 0.280 0.176 0,827
LW-FI Precision(.30) 10.25 0.328 0.266 0,579
Precision (.20) 19.74 0.114 0.198 0,747
Fixed 30 0.256 0.173 0,836
PW-FI Precision .30) 10.38 0.333 0.266 0,575
Precision (.20) 24.07 0.205 0.209 0.835
Fixed 30 0.272 0.173 0,836
FP-KL Precision .30) 11.14 0.461 0.289 0,614
Precision (.20) 25.67 0.215 0.211 0.833
Fixed 30 0.395 0.196 0,829
VP-KL Precision .30) 10.26 0.397 0.265 0,653
Precision (.20) 20.67 0.373 0.198 0,821
Fixed 30 0.336 0.175 0,854
FI-KL Precision .30) 12.04 0.324 0.289 0,445
Precision (.20) 24.73 0.199 0.209 0.835
Fixed 30 0.224 0.192 0,742
VI-KL Precision .30) 10.31 0.361 0.265 0,620
Precision (.20) 19.83 0.117 0.198 0,750
Fixed 30 0.304 0.174 0,844
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