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Psychology: Research and Review

Table 4 Difficulty and discrimination power of items in version B of the TDE-II

From: Development of the Arithmetic Subtest of the School Achievement Test-Second Edition

Item

Difficulty

Discrimination

Item

Difficulty

Discrimination

A38

−0.6484

3.0287

A67

1.1098

5.716

A37

−0.6369

3.3532

A77

1.1859

1.4303

A41

−0.6065

3.4624

A88

1.2549

2.0311

A39

−0.604

4.1499

A90

1.2574

3.2208

A53

−0.0067

3.2261

A82

1.2785

3.8193

A62

0.064

2.5025

A72

1.3361

2.6694

A44

0.0858

3.2814

A69

1.4662

4.0853

A54

0.2088

3.3916

A84

1.6088

2.7979

A50

0.4287

2.7401

A89

1.7578

2.5416

A59

0.5039

4.1512

A86

1.7958

2.4449

A46

0.5444

3.6426

A96

1.8705

3.2276

A52

0.5649

3.046

A85

1.8709

2.3781

A56

0.7565

2.6032

A70

1.946

2.4555

A63

0.7584

4.0741

A68

2.0229

2.2619

A57

0.8137

4.1131

A71

2.045

3.2069

A87

0.8208

2.6471

A97

2.1589

3.8918

A65

0.9048

6.3845

A73

2.1863

2.2984

A64

0.9239

6.278

A98

2.5193

2.446

A61

0.9441

5.2496

A81

2.7061

2.6243

A60

0.9588

5.3662

A100

2.7857

1.7694

A79

1.0391

3.0221

A92

3.2164

1.8715

A74

1.0473

2.846