Dimension

Sub-dimension

Number of items

Reliability of the sub-dimension

Reliability of sub-scale

Reliability of the scale

Knowledge

Language proficiency

1

-

0.94

Global knowledge

5

0.90

National knowledge

5

0.91

Attitude

Concern about global issues

9

0.91

0.94

Openness

5

0.82

Respect for the diversity of global issues

6

0.85