A function is a neural pathway that achieves a certain consequence without people needing to be aware of the consequence. They have different functions in group and out group.
In-group function is pro-efficiency during would be times of stress. Its about resource management, because if you pray for someone instead of going over on a plane and trying to actually help them it doesn't disrupt local life. In ancient times this would be very valuable because more farm hands and such, less dangerous exploration. Outside of that context, if we acknowledge the high probability of alien life on other planets, if any of them are sapient/sentient. Then we have to acknowledge they may develop religions as well, and with galaxy clusters of clusters of galaxies, there is a vast amount of potential religions, especially if we go all Rick N Morty on it, then there is near infinite variations of religions. Today we have thousands of denominations of Christianity for instance. So when we examine faith in this context, and assume all religions require faith, 99.9+% of religions will fail to convert to any 1 true religion, thereby in Christianity's case, faith is a concept that would inevitably condemn the vast majority of things to hell. So while it seems like faith is pro-solidarity, its actually only true for localized communities to an extent and it may cause a bias against outsiders. But today we have the internet, so people are less biased against outsiders because they communicate with them.
When I think of Gullibility I think of Twilight Sparkle. Being gullible helps you learn in a tightly controlled environment, it reduces hesitation, it increases rates of knowledge absorption. Potentially anyways. When you add in malicious influence gullibility really shows its weakness. Therefore gullibility is pro-authoritarianism because it doesn't help distinguish whats correct on its own, and basically just believes what they are taught. Because of modern day being so complex and not a controlled culture so much, gullibility is a bad thing because it increases psychological distress from contradictory information and due to people who don't have your best interests in mind. If there was a shepherd/sheep scenario. it'd be good, but even then you have no guarantee of believing something true because of a lack of skepticism. But some types of gullibility can lead into inquiry if the culture does not silence inquiry, or if inquiry is promoted because of curiosity and say trying to get a student into science or such. If this inquiry is used on everything they will eventually find out any lies they were told, if they think curiosity will benefit them in the regions they were lied to anyways.
Paranoid behavior may have had a reason to develop. Times of danger, as prey animals for example paranoia would get them to be more successful at survival. Of course in other contexts its very harmful. Cults do try to utilize it tho to keep people more controlled, often doing a stranger danger sorta deal so they don't lose people. This makes it functionally similar to faith in a way, pro-localized community.
Its a very rewarding thing for those giving and receiving (no wonder Rarity can be so sexy lol). Thanks to the internet and things like patreon generosity really does help society be a better place. But because its so easy to be generous because it feels good to give, some people know they can take advantage of that for money, and it increases scams. Generosity should not be blind to potential scams, but that doesn't feel as good to be aware of, so people tend to be dismissive or disbelieve or don't care sometimes because believing it went to a good cause and not a scam artist is more rewarding, and they cannot control it alot of the time after giving the money up. Probably why some people try taking back gifts if you don't use something conventionally, it feels bad man. But that's because they did not comprehend who they gave it to.
Some emotions or concepts are even more localized than local, and by that I mean the level brooding works on is pro-individual not pro-local-community or such. But even saying 'pro-communuty' is too general of an understanding, and doesn't distinguish a group by its qualities really. But brooding is sort of like what happens after a kid doesn't get what they want after a tantrum. They dwell on negative emotions like vengeance. Think of the villain from The Incredibles when I mention brooding. Think of school shooters when I mention brooding (if they are narcissistic and brooding, they use that superiority complex to punish others after thinking life ain't fair due to their entitlement.(got that from Rageaholic Faberge eggs video, he does swear a bit tho so fair warning) Imagine the snobs from Code Geass really, how they would behave if they suddenly were called an Eleven after losing everything they own. They would flip out.). This is an anti-community emotion. Enemies of your current culture may try and utilize it or suspicion etc to cause conflict in-group. If a whole group is brooding it might as well turn into a riot, like your favorite sports team just lost the cup on their home turf, time to break stuff! lol. Its the same thing as a tantrum. Its also what tends to motivate villains in fiction, similar things as this. They are not happy with the current culture's status quo, thus they want to break it apart for their advantage or some ideal. Think sjw riots n such like antifa. They learn to feel like their culture is bad, through the negative perspective on American history in colleges or through sociology, either the past was bad (fallacy) or currently are bad (cherry picking plus confirmation bias plus empowerment= feel good and never learn and always stick to your guns).
People are shy because of Operant Conditioning. Either you had negative reinforcement for being social, or you had positive reinforcement for being non-social. Or, maybe you were social but with a few people who are not representative of the norm, so when the norm responds differently you end up clueless, because your family was socially isolated from other families or community. With this knowledge, one can understand their situation better and psycho-analyze their past and themselves to see why they are shy, and that leads to how to not be shy (if its the right thing to do for your goals based on risks n etc) by re-teaching yourself with positive reinforcement for opening up. Buy a candy bar, and when you speak to someone you reward yourself with it. Or you give yourself a different reward like imagine Pinkie Pie hugging you or something. This is also why extroverts can feel dreadful when not socializing, negative reinforcement for being alone.
The effects of shyness on different aspects of group interaction is it is sort of like a fallacy I was taught about in SC2. It goes like this, you can learn a faster button format, which takes a month you could be practicing the game for, or you go and keep the same format(button layout) which is slower but you improve faster at it. Which means you skill ceiling potential is lower, but your current progress and skill are higher. The same fallacy happens in group dynamics. Like some busy families if you are shy and not experienced they may not include you in their local business activities as much, but if you learned more and broke out of your shell it could be helpful, but when you make mistakes they will be dissuaded from letting you continue initially. On a large scale shyness is bad for the economy to be technical, depends on what kind of shyness really. But there is a benefit to taking your time and being shy, which is you consider more options for your life choice and you make less regrets, but you also make regrets from not doing anything. So extroverts and introverts have regrets really. I think fear causes regrets therefore. Forced opportunism limits scope, and a lack of opportunism reduces activity, you need healthy opportunism to be self-actualized.
Ask me about other behaviors you want to hear my take on.
Emotion-led activities you cannot be in control of your destiny so much as life being deterministic for you. To understand the long term effects of your actions you need to look at it from 3rd person, outsider perspective, zoomed out, if you know what I mean. It is what makes fiction great and relatable really. But for people who want to do something different with themselves, or don't know the long term effects on society they cause, I think logic is potentially objective and emotion is always personal. Its more limited. But if something doesn't check out with emotion your heart won't be in it, and if you operate from logic you can also miss out on things that make you feel good. So I used to think it was like, logic>emotion, but reality is they both have their place. They need to co-operate and communicate. But I know its far more natural to be emotional than logical. So that's why I am giving logic into emotional concepts.