Experimental group CET-4 (overall)

Controlled groups CET-4 (overall)

Experimental group CET-4 (listening)

Controlled groups CET-4 (listening)

Experimental group C-level

1

0.177

1

0.024

1

0.299

1

0.548

Pearson correlation

Significant (double side)

0.399

0.938

0.177

0.065

Experimental group B-level

1

0.449*

1

0.172

1

0.430*

1

0.351

Pearson correlation

Significant (double side)

0.024

0.573

0.032

0.239

Experimental group A-level

1

-0.324

1

-0.175

1

0.388

1

-0.124

Pearson correlation

Significant (double side)

0.163

0.587

0.074

0.700