Table 1 Pearson’s product moment correlation of difficulty estimates and perceived difficulty level (grammar items)

1.1. Difficulty estimates grammar items (first set)

Pearson

–

.166

.046

.145

Sig. (2-tailed)

.206

.725

.269

2. Perceiveddifficulty levelgrammar items (first set)

Pearson

–

.177

.583^**

Sig. (2-tailed)

.177

.000

3. Difficulty estimates grammar items (second set)

Pearson

–

− .094

Sig. (2-tailed)

.475

4. Perceived difficulty level grammar items (second set)

Pearson

–

Sig. (2-tailed)