This is a nice summary, and I agree with your theory about potential causes. I added the Impostor Syndrome tag to this post, which you might find useful to browse for more ideas other people have had.
(In case anyone else was wondering, the dictionaries I checked accept both impostor and imposter as variants of the same word. It looks like existing posts are split about evenly between the two :) )
This is a nice summary, and I agree with your theory about potential causes. I added the Impostor Syndrome tag to this post, which you might find useful to browse for more ideas other people have had.
(In case anyone else was wondering, the dictionaries I checked accept both impostor and imposter as variants of the same word. It looks like existing posts are split about evenly between the two :) )