Experimental text
1 = negative+nouns
2 = negative_adjectives
3 = positive_nouns
4 = positive _adjectives
5 = neutral_nouns
6 = neutral_adjectives

Valence of text information
1 = negative
2 = positive
3 = neutral

Language abstractness in the text
1 = nouns
2 = adjectives

What is your nationality?
0 = other
1 = Czech

Your gender
1 = men
2 = woman

What is your highest education?
1 = primary
2 = secondary
3 = high school
4 = college

Currently I am a student
0 = No
1 = Yes

How often do you encounter people of Vietnamese origin?
1 = not at all
2 = rarely
3 = sometimes
4 = often
5 = very often

How many Vietnamese friends do you have?
1 = none
2 = one
3 = two
4 = three to five
5 = more than five

How often do you meet your Vietnamese friends?
1 = every day
2 = several times per week
3 = several times per month
4 = several times per year
5 = less than two times per year

I am glad I am a Czech.
1 = I totally disagree
2 = I disagree
3 = I somewhat disagree
4 = I can't decide
5 = I somewhat agree
6 = I agree
7 = I totally agree

I usually consult many different opinions before forming my own view.
1 = I totally agree
2 = I agree
3 = I somewhat agree
4 = I can't decide
5 = I somewhat disagree
6 = I disagree
7 = I totally disagree

Categorized national identification according to average score
1 = low, 1-2,99
2 = moderate, 3-4,99
3 = high, 5-7

Categorized national identification according to standardized average score
1 = low, < -1SD
2 = moderate, -1SD to +1SD
3 = high, > +1SD