Description
This mod hasn't been created for discrimination purposes, it is just a way to add more fun to the sims' characters.
Basic
Sims with basic intelligence typically feel bored by learning or researching. They generally aren't so skilled. They don't value knowledge as much or mental activities, and they can't stay focused or think as critically as other sims. Furthermore, they also match well with basic intelligence sims and see the intelligent sims as know-it-alls.
Intelligent
Sims who are intelligent are somehow exceptional in learning and can be very focused or very inspired on occasion. They enjoy mental activities, witty humor, thinking critically and match very well with sims who can mentally stimulate them.
Standard
Sims with standard intelligence can easily be influenced by any kind of mood on a low level. They gain skills on an average level, no matter if they pursuit knowledge, mental activities or not. They also match well with almost any kind of sim, and they find intelligent or genius sims admirable.
Each trait has one special funny/social interaction, with different impact on each sim based on their CAS traits or the mod's traits.
Things to consider; you cannot give the basic trait to a Genius sim, but you can give the intelligent trait to any sim – genius or not – and the Genius sim will highly appreciate your intelligent sim, no matter if they have the intelligent trait or not. The same goes with Bookworm sims, Creative, and a few more.
All mods are updated to work without the script files. Script files were causing technical issues, possibly conflicting with other mods. Check your folders for script files and simply remove them. If the mod doesn't work, stop using it.