1 = Expert
2 = Non expert

1 = I
2 = It

1 = Male
2 = Female

1 = No qualification
2 = GSCE or equivalent
3 = A level or equivalent
4 = Undergraduate
5 = Post-graduate

What is your first language
1 = English
2 = French
3 = Spanish
4 = German
5 = Other

Finished
0 = uncomplete
1 = complete

agreement_participation
1 = Yes
2 = No

1 = 1
2 = 2
3 = 3
4 = 4
5 = 5