#predisposition

I didn't say beliefs come from emotion; I said that people come to their beliefs through emotion. I'm not describing a straightforward cause-effect mechanism. Emotions are an indication of salience. As a general rule, strong/intense negative emotions are designed to be uncomfortable so that they prompt some sort of ameliorative response/action.

To ameliorate negative emotions, people with low emotional intelligence oftentimes create a narrative in an attempt to explain their cause or origin (rationalization). This is not an effective strategy. Why? One reason is the unfortunate side-effect of creating a false narrative that enables the formation of faulty beliefs (about the world). Let's say, early in life, someone you trusted hurt you quite badly. The situation would've triggered intense negative emotions like sadness or anger. Some examples of ameliorative narratives:

You might've crafted a story about how bad that person is. This would make people's misbehavior more emotionally salient to you. Gradually, with every slight and insult you witnessed in life, you'd start to form stronger and stronger beliefs about how terrible people are and/or how cold the world is. How would this affect the development of your personality? You'd likely develop anxiety issues and become very closed, avoidant, detached, or defensive.

You might've crafted a story about your status as a victim. This would make people's judgments of you more emotionally salient. Gradually, with every slight and insult you experienced in life, you'd start to form stronger and stronger beliefs about there being something fundamentally wrong with you and how you might actually deserve to be victimized. How would this affect the development of your personality? You'd likely become passive, helpless, and eventually expect/accept mistreatment.

The negative emotions you experienced didn't "cause" you to formulate specific beliefs or dictate what your beliefs should be, rather, they only served to create conducive conditions for your beliefs to arise. Notice how it's possible for two different people to respond very differently to the same negative situation and subsequently develop very different belief systems.

2) The other source of your confusion comes from having an oversimplified idea of what beliefs are. To be fair, in everyday speech, "belief" is used in an incredibly rough and broad way to encompass many different kinds of mental phenomena, so it's easy to get confused. Since I'm speaking mainly to laypeople, I avoid technical jargon whenever possible, but this sacrifices precision.

In the EI article, the word "belief" is not being used in the same way as in the above examples. Rather, I'm referring to a person's proneness to believe certain things due to their personality type (see the examples I gave in the article). For instance, being Ne dom primes one to believe that the world is full of wonder and possibility, or being Ni dom primes one to believe that the future is now. Why would two people respond differently to the same negative situation and come to different beliefs in the end? One important factor is having different personality traits that prime them to perceive and judge the world differently. Because of personality differences, people don't exactly begin at the same place, so it should come as no surprise when they end up with different belief systems.