Table 1 Scale reliabilities α for AIDA in Germany[18] and for the Spanish version in Mexico (student sample N = 265) and marker items per subscale

.94

58

.94

Sum of scales

.86

27

.85

Sum of subscales

.73

9

.70

1: I have hobbies or interests that are part of who I am; 33: As time goes by, I can imagine well how I will be in the future.

.76

11

.74

2: I am proud of my roots and I feel like belonging to this group; 54: My friendships usually last only a few months

.76

7

.76

3: I often don’t know how I feel right now.; 11: I'm not sure if my friends really like me.

.92

31

.92

Sum of subscales

.86

11

.83

4: I feel that I have different faces that do not fit together well. 13: I often feel lost, as if I had no clear inner self.

.84

12

.81

22: When my friends disagree with my opinion and ideas I feel "put down".; 42: When I’m alone I feel helpless.

.76

8

.75

51: I often have a block when I ask myself why I did things; 35: I am confused about what kind of person I really am.