How much of Jessica Jones's attitude is the result of her past traumas (like Stirling's murder and Kilgrave), and how much of it is the side-effect from the procedures Dr. Malus performed on her? There's a strong case for the latter: her mother has even worse anger control issues and also mentions drinking problems, so Jessica may likewise be suffering from impulses to verbally and physically attack people that she cannot control, only at a slightly more manageable level than her mom.
Oooh, that’s a really good question. It makes sense that the procedure might have amped up her aggression to a certain degree, but she has also been given plenty of reasons to build emotional walls all on her own. We’d say that in the grand scheme of things, most of Jessica’s attitude is probably a result of her life experiences. The biggest clue here is the flashbacks in both seasons. Pre-Kilgrave, Jessica seemed happy, cheerful, and willing to open up to people. The same is true of college-age Jessica in the Season 2 flashbacks. The story has presented Jessica as an inherently caring person who has had her spirit shredded by a succession of traumas that have turned her hard and bitter and angry. We blame Kilgrave in particular. The huge personality difference between post-Kilgrave Jessica and pre-Kilgrave (but still post-accident) Jessica suggests that her mind control experience had far more of an impact on her attitude than Malus’s procedure.
The drinking detail is a little bit harder to parse, because we do know Jessica drank quite a bit even before Kilgrave. It’s very possible that this could correlate with anger/pain/depression stemming from Malus’s procedure. She certainly wasn’t all rainbows and butterflies at that point either.
But she also had plenty of reasons to drink anyway, so it’s impossible to know for sure. Our best answer here is that it’s likely the procedure did affect her a little, but that her current personality is a combination of a lot of different factors that can’t be picked apart with the information we have.