Since a hobby is a leisure activity, however, the primary purpose of such publications is still entertainment. Also, such publications typically have large advertising sections for specialized products. Scholarly publications are intended for a specialist audience , and their primary purpose is to inform . Some contain no advertising and are supported by professional organizations. Others have advertising, though it is usually less distracting than that in popular publications.
Scholarly journals publish the results of research in the specialty area.
Articles use terminology not familiar to those outside the specialty, complex concepts and issues are examined in detail, and articles may be very long. Graphs or charts are incorporated into the text and are not distracting. Sources are cited in notes or bibliographies. Authors of the articles are named, and usually their credentials are given. Some scholarly publications are for members of professional organizations.