I'm glad to see this recent discovery on this website. I saw this on Reddit and couldn't find much on it that was dissected enough for me to understand. I relate heavily to this study, because I grew up in an abusive house hold with an alcoholic sociopath mother. Somehow, after a lot of difficult phases of life, I've managed to be a highly functioning member of society. I'm also a natural optimist. To a fault, sometimes. I tend to only see the good in people and situations, and its so deeply ingrained within me I struggle sometimes to accept the realistic sides of things. I wonder now after this study, if my brain re-wired itself to provide me with extreme optimism as a protective trait. I do honestly believe my optimism saved me, I've always believed that. Very interesting.