Journals
Journals are a type of periodical. Periodicals are publications that are published periodically, that is, daily, weekly, monthly, bi-monthly, etc. Periodicals include magazines, newspapers, journals, and, more rarely, a few book series. Periodicals are sometimes also referred to as "serials."
Journals are intended for professionals, experts, and researchers and the articles are usually authored by professionals, experts, and researchers.
Journal articles are relatively short (a few pages) compared to books (about 300 pages) so they tend to cover narrow, specific, advanced topics. The latest research is published in journals, but it can be difficult to find simple, basic information in journals. This is because the intended journal audience of professionals, experts, and researchers are usually already familiar with the basic information of their discipline and are reading the journals to find out what is new. Occasionally, review articles or retrospectives may be published, but this is not most common, especially in the sciences and health sciences.
Nowadays, most journals have a web site that allows viewing of the table of contents and summaries of articles. The majority of Journals today are collected electronically, however, the ISU Library continues to preserve the older journals in paper and microformats. All print library journals and magazines except "Current Periodicals" are now located in the ISU Library basement.
Scientific journal articles can be difficult to understand if you don't already have a good background on a topic. Do you need to look at an encyclopedia article first in order to get some background? Do you need to learn more details about the topic in order to learn terminology and related theories? Use a specialized glossary or dictionary to look up unfamiliar terminology.
Journals are very important to the sciences. Most new research is published in a peer-reviewed journal rather than in a book. The peer review process adds credibility to the research as papers have been reviewed and approved by experts in the field. This does not eliminate all distribution of false theories or bad research but it helps to cull the herd.
In contrast, scholars in the humanities may publish their research in either a journal or a book.