Why is it important to examine an author`s or publisher`s institutional affiliations or previous works?

The examination of an author or publisher's institutional affiliations is necessary for many reasons. Among them, the most significant is to check the credibility of the author or his works. Then, to check his perceptions that may be a consequence of biased background. This would also assist to know if there is any other book to the series, to understand the point of view of the author, his/her influences, etc. Thus, the inquiry of the author or publisher's background is to check the credibility and reliability of the author, biased opinions, and know the purpose of the author or to relate the text.

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