NOTE: Scientific studies published in academic journals are considered primary source material.
Scholarly journal articles are written by scholars for scholars and present a new interpretation or thesis based upon a synthesis of primary sources, scholarly journal articles, and other secondary sources.
Many are also peer-reviewed; in other words, they must be approved by other scholars in the field before publication..
Scholarly journal articles generally have a bibliography of materials for further study, including primary sources, journal articles, and books.
Look for journal article references in the bibliographies and/or notes in your secondary source books / ebooks and other journal articles.
General Search Tips for Online Databases:
Limit results to Full Text.
Look for search terms in article titles.
Use Filters.
Use AND / OR operators (also known as Boolean operators).