What part of the paper presents the credentials of the researcher especially for professionals in the field?

The part of the paper that presents the credentials of the researcher, especially for professionals in the field, is typically the "Author Affiliation" or "Author Information" section. This section is usually found at the beginning of the paper, right after the title and the abstract. It provides information about the author's educational background, institutional affiliation, and other credentials that establish their expertise and credibility in the field. This information is important for other professionals in the field to assess the reliability and validity of the research.