Authors of scholarly articles are usually subject experts, researchers or scholars in their fields. Scholarly journals often list the author's credentials near the beginning of each article. If no specific credentials are present, such as degrees or other publications, the author of a scholarly article will likely be associated with an institution of higher education. Scholarly articles often start with an abstract of the contents of the article. You still must examine the article in hardcopy to be sure.
Scholarly articles are generally much longer than articles in popular magazine.
The range of page numbers in the article citation will give you this information. The language used in scholarly articles draws heavily upon the terminology, jargon and definitions of the subject discipline. It assumes some degree of subject knowledge on the part of the reader. Therefore, the reading of scholarly articles may be difficult for newcomers to the discipline. Note that the name of the professional organization may or may not appear as part of the title.