Precisely, I don't know. I would not expect such a specific group, or any other, to significantly differ (might be a sampling issue, or something with a reason). Hence my question, but that may also be a translation issue.
One could form hypotheses of course, but they won't be much of relevance here I think :)
> Precisely, I don't know. I would not expect such a specific group, or any other, to significantly differ
Do you mean for this specific item or in general? The former makes sense, but the latter I'd find a little weird given how publically well-known it is that there are group differences (take educational attainment in the United States for example).
One could form hypotheses of course, but they won't be much of relevance here I think :)