Variable

1

2

3

4

5

6

1. Nonword repetition

-

2. Forward digit span

.602**

-

3. Backward digit span

.372**

.496**

-

4. Forward tapping

.122

.292**

.304**

-

5. Backward tapping

.024

.215*

.240*

.510*

-

6. Block design

.087

.309**

.415**

.447**

.480**

-

7. Vocabulary

.307**

.443**

.381**

.176

.223*

.291**