When does the Echo Chamber show up?
When a person with this pattern meets an opposing opinion, they try right away not to listen. They take an opposing opinion not as something to examine but as evidence of hostility toward them. They keep around them only the channels, news, and people that agree with their view, and gradually come to meet only people who think the same way. This pattern starts from the conviction that one is objective and free of bias.
Am I in an Echo Chamber? How do I check?
This pattern is hard to tell apart on the outside from having clear convictions. Having reached a conclusion through grounds and having stopped reexamining one's conclusions are different. If you have no memory of admitting you were wrong in the past few months, that is the clearest sign. The free 76 questions give a rough check, and the full 288 questions measure 36 traits so you can see the exact degree.
How is the Echo Chamber different from the Self-Deceiver?
Neither sees their own contradictions. Why they do not see them differs. The Self-Deceiver does not see the contradiction within their own mind; because they sincerely believe, they do not regard the contradiction as one. The Echo Chamber chooses the media they listen to and the people they meet, keeping only media and people through which no opposing opinion can be heard. So the Self-Deceiver closes their mind, while the Echo Chamber narrows the range of people they meet.
Can the Echo Chamber be fixed?
This pattern is not seen as a defect to fix. Conviction itself is a state of having reached a conclusion through grounds, and it is not a problem. Conviction and the echo chamber are distinguished by whether one can doubt that conclusion. If, on seeing counterevidence, one asks whether one might be wrong, it is conviction; if not, it is an echo chamber. How one treats the conclusion is the standard.