It's not general intelligence per se. Self-awareness and objective decision making are skills: a result of environment as well as individual capability. I know

It's not general intelligence per se. Self-awareness and objective decision making are skills: a result of environment as well as individual capability. I know lots of very intelligent people who seemingly can't apply that intelligence any time they have strong emotions about an outcome. We also know that children can be inculcated with difficulties distinguishing fiction from fact (1). IMHO, as you mention, it's a spectrum, perhaps the equivalent of the Autistic spectrum for Emotional Reactivity Disorder. Though unlike autism or borderline personality disorder, I believe that it's a skill deficit rather than an inherent disorder of personality. I also believe that more than half this country is suffering much more profoundly from it than we are aware. (1) https://onlinelibrary.wiley.com/doi/full/10.1111/cogs.12138 https://onlinelibrary.wiley.com/doi/full/10.1111/cogs.12138