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Shima Costar
Grey literature (or gray literature) is materials and research produced by organizations outside of the traditional commercial or academic publishing and distribution channels. Common grey literature publication types include reports (annual, research, technical, project, etc.), working papers, government documents, white papers and evaluations. Organizations that produce grey literature include government departments and agencies, civil society or non-governmental organizations, academic centres and departments, and private companies and consultants.
Grey literature may be difficult to discover, access, and evaluate, but this can be addressed through the formulation of sound search strategies. Grey literature may be made available to the public, or distributed privately within organizations or groups, and may lack a systematic means of distribution and collection. The standard of quality, review and production of grey literature can vary considerably.
Though the concept is difficult to define, the term grey literature is an agreed collective term that researchers and information professionals can use to discuss this distinct but disparate group of resources.
While a hazy definition of "grey literature" had existed previously, the term is generally understood to have been coined by the researcher Charles P. Auger, who wrote Use of Reports Literature in 1975.[1] The literature he referred to consisted of intelligence reports and notes on atomic research produced in vast quantities by the Allied Forces during World War II. In a conference held by the British Lending Library Division in 1978, Auger used the term "grey literature" to describe the concept for the first time.[2] His concepts focused upon a "vast body of documents" with "continuing increasing quantity" that were characterized by the "difficulty it presents to the librarian". Auger described the documentation as having great ambiguity between temporary character and durability, and by a growing impact on scientific research. While acknowledging the challenges of reports literature, he recognized that it held a number of advantages "over other means of dissemination, including greater speed, greater flexibility and the opportunity to go into considerable detail if necessary". Auger considered reports a "half-published" communication medium with a "complex interrelationship [to] scientific journals". In 1989 Auger published the second edition of The Documentation of the European Communities: A Guide, which contained the first usage of the term "grey literature" in a published work.[3]
The "Luxembourg definition", discussed and approved at the Third International Conference on Grey Literature in 1997, defined grey literature as "that which is produced on all levels of government, academics, business and industry in print and electronic formats, but which is not controlled by commercial publishers". In 2004, at the Sixth Conference in New York City, a postscript was added to the definition for purposes of clarification: grey literature is "...not controlled by commercial publishers, i.e., where publishing is not the primary activity of the producing body".[4] This definition is now widely accepted by the scholarly community.
The U.S. Interagency Gray Literature Working Group (IGLWG), in its "Gray Information Functional Plan" of 1995, defined grey literature as "foreign or domestic open source material that usually is available through specialized channels and may not enter normal channels or systems of publication, distribution, bibliographic control, or acquisition by booksellers or subscription agents". Thus grey literature is usually inaccessible through relevant reference tools such as databases and indexes, which rely upon the reporting of subscription agents.
In 2010, D.J. Farace and J. Schpfel pointed out that existing definitions of grey literature were predominantly economic, and argued that in a changing research environment, with new channels of scientific communication, grey literature needed a new conceptual framework.[5] They proposed the "Prague definition" as follows:.mw-parser-output .templatequoteoverflow:hidden;margin:1em 0;padding:0 32px.mw-parser-output .templatequote .templatequoteciteline-height:1.5em;text-align:left;padding-left:1.6em;margin-top:0
Grey literature stands for manifold document types produced on all levels of government, academics, business and industry in print and electronic formats that are protected by intellectual property rights, of sufficient quality to be collected and preserved by library holdings or institutional repositories, but not controlled by commercial publishers i.e., where publishing is not the primary activity of the producing body.[6]
The term grey literature acts as a collective noun to refer to a large number of publications types produced by organizations for various reasons. These include research and project reports, annual or activity reports, theses, conference proceedings, preprints, working papers, newsletters, technical reports, recommendations and technical standards, patents, technical notes, data and statistics, presentations, field notes, laboratory research books, academic courseware, lecture notes, evaluations, and many more. The international network GreyNet maintains an online listing of document types.[7]
Organizations produce grey literature as a means of encapsulating, storing and sharing information for their own use, and for wider distribution. This can take the form of a record of data and information on a site or project (archaeological records, survey data, working papers); sharing information on how and why things occurred (technical reports and specifications, briefings, evaluations, project reports); describing and advocating for changes to public policy, practice or legislation (white papers, discussion papers, submissions); meeting statutory or other requirements for information sharing or management (annual reports, consultation documents); and many other reasons.
Organizations are often looking to create the required output, sharing it with relevant parties quickly and easily, without the delays and restrictions of academic journal and book publishing. Often there is little incentive or justification for organizations or individuals to publish in academic journals and books, and often no need to charge for access to organizational outputs.[8] Indeed, some information organizations may be required to make certain information and documents public. On the other hand, grey literature is not necessarily always free, with some resources, such as market reports, selling for thousands of dollars. However, this is the exception and on the whole grey literature, while costly to produce, is usually made available for free.
While research and production quality may be extremely high (with organizational reputation vested in the end product), the producing body, not being a formal publisher, generally lacks the channels for extensive distribution and bibliographic control.[9]
Information and research professionals generally draw a distinction between ephemera and grey literature. However, there are certain overlaps between the two media and they undoubtedly share common frustrations such as bibliographic control issues. Unique written documents such as manuscripts and archives, and personal communications, are not usually considered to fall under the heading of grey literature, although they again share some of the same problems of control and access.
The relative importance of grey literature is largely dependent on research disciplines and subjects, on methodological approaches, and on the sources they use. In some fields, especially in the life sciences and medical sciences, there has been a traditional preference for only using peer-reviewed academic journals, but studies of methodological quality and reliability have found that "reliability of published research works in several fields may be decreasing with increasing journal rank",[10] contrary to widespread expectations.[11] In other fields, such as agriculture, aeronautics and the engineering sciences in general, grey literature resources tend to predominate. In the last few decades, systematic literature reviews in health and medicine have established the importance of discovering and analyzing grey literature as part of the evidence base and in order to avoid publication bias.[12]
Grey literature is particularly important as a means of distributing scientific and technical and public policy and practice information.[13] Professionals insist on its importance for two main reasons: research results are often more detailed in reports, doctoral theses and conference proceedings than in journals, and they are distributed in these forms up to 12 or even 18 months before being published elsewhere.[14] Some results simply are not published anywhere else.
In particular, public administrations and public and industrial research laboratories produce a great deal of "grey" material, often for internal and in some cases "restricted" dissemination.[15] The notion of evidence-based policy has also seen some recognition of the importance of grey literature as part of the evidence base; however, the term is not yet widely used in public policy and the social sciences more broadly.
For a number of reasons, discovery, access, evaluation and curation of grey literature pose a number of difficulties. Generally, grey literature lacks any strict or meaningful bibliographic control. Basic information such as authors, publication dates and publishing or corporate bodies may not be easily identified. Similarly, the nonprofessional layouts and formats, low print runs and non-conventional channels of distribution make the organized collection of grey literature a challenge compared to journals and books.[3]
Although grey literature is often discussed with reference to scientific research, it is by no means restricted to any one field. Outside the hard sciences, it presents significant challenges in archaeology where site surveys and excavation reports, containing unique data, have frequently been produced and circulated in informal "grey" formats.
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