Not just social skills: for example, intensity and stress tolerance. I think "emotional skills" would be a better way to describe what they're getting at.

Yes, it's confusing and no, it isn't due to a translation. There is quite a bit of other unnecessarily convoluted jargon and grammar in the report as well, so I think it's just that one or more of the authors has misguided ideals about academic writing style.

>Not manual skills, such as those needed for carpentry

Those skills are still cognitive. You need to know what you're doing to do carpentry. It's not like your hand moves by itself.