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Table 4 Approximate relationships between PERSON measures

From: A Rasch-based validation of the Vietnamese version of the Listening Vocabulary Levels Test

PCA contrast

ITEM cluster

Pearson correlation

Disattenuated Pearson correlation

1

1–3

0.6105

0.7629

1

1–2

0.7404

0.8557

1

2–3

0.8679

1.0000

2

1–3

0.6901

0.7868

2

1–2

0.8607

0.9587

2

2–3

0.7915

0.9205

3

1–3

0.6241

0.7520

3

1–2

0.8252

0.9483

3

2–3

0.8239

0.9281

4

1–3

0.6883

0.8103

4

1–2

0.8411

0.9461

4

2–3

0.8450

0.9561

5

1–3

0.6924

0.8214

5

1–2

0.8127

0.9415

5

2–3

0.8754

0.9743