How difficult was it to make your choice (low - high)
1 = 1
2 = 2
3 = 3
4 = 4
5 = 5
6 = 6
7 = 7

When I think back at my choice, I feel guilty
1 = not at all
2 = 2
3 = 3
4 = 4
5 = 5
6 = 6
7 = very much s0

What is your gender?
1 = male
2 = female
3 = other
4 = na

Is German your native language?
1 = yes
2 = no

How would you rate your German skills?
1 = 6
2 = 5
3 = 4
4 = 3
5 = 2
6 = 1

Are you currently a student?
1 = no
2 = yes

(....) Would you like the Amazon or the Alnatura voucher?
1 = Amazon
2 = Alnatura

choice for either the ethical or unethical T-shirt
1 = ethical
2 = unethical

choice for the ethical vs. unethical t-shirt, different coding (see paper)
-1 = unethical
1 = ethical

conflict manipulation groups (did not work, see manuscript)
0 = low conflict
1 = high conflict