It's reasonable to assume that kids whom are bullied have socially undesirable qualities vis-a-vis kids who are not bullied. Kids with socially undesirable qualities are obviously more likely to become adults with socially undesirable qualities.
There's no reason to think those people wouldn't perform worse when they are literally selected for negative qualities.
Yes, socially undesirable qualities like being smaller than other children because they were pushed forward a year for being bright. Or because they wear a discount brand of clothing. Or because they were called a mocking name that rhymed and therefore stuck for years. Or because of jealously. Or because their father had to fire another child's father from their job.
In my experience bullying comes after humiliating public experience. Say something stupid in front of the whole school and made everyone laugh? Good, now you are first candidate for bullying
Yep. I got my share of bruises and ruined clothing for being praised in front of the class for top marks. To this day, I'm very uncomfortable in the spotlight.
LGBQT was considered socially unacceptable a decade ago, I would think someone like that who was in a tolerant society probably would have better outcomes than an intolerant one.
It's reasonable to assume that kids whom are bullied have socially undesirable qualities vis-a-vis kids who are not bullied. Kids with socially undesirable qualities are obviously more likely to become adults with socially undesirable qualities.
There's no reason to think those people wouldn't perform worse when they are literally selected for negative qualities.