{"id":5967,"date":"2023-05-14T20:03:09","date_gmt":"2023-05-14T20:03:09","guid":{"rendered":"https:\/\/researcher.life\/blog\/?p=5967"},"modified":"2024-05-17T14:14:28","modified_gmt":"2024-05-17T14:14:28","slug":"gray-literature-in-research","status":"publish","type":"post","link":"https:\/\/researcher.life\/blog\/article\/gray-literature-in-research\/","title":{"rendered":"Gray Literature in Research: Definition, Types, Sources and Drawbacks"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5969 size-medium\" src=\"https:\/\/blog.researcher.life\/wp-content\/uploads\/2023\/05\/pexels-mauricio-mascaro-376533-1.jpg\" alt=\"Gray literature in research: Definition, Types, Sources and Drawbacks \" width=\"2000\" height=\"1333\" \/><\/p>\n<p><span data-contrast=\"auto\">In academia, researchers traditionally turn to peer-reviewed research publications and academic journals as reliable and verified sources of information. Over the years, however, <\/span><span data-contrast=\"auto\">gray literature<\/span><span data-contrast=\"auto\"> has emerged as another category of information in research. In this article, we explain <\/span><span data-contrast=\"auto\">what is gray literature<\/span><span data-contrast=\"auto\">, cover types of <\/span><span data-contrast=\"auto\">gray literature in research<\/span><span data-contrast=\"auto\">, and list some <\/span><span data-contrast=\"auto\">gray literature databases<\/span><span data-contrast=\"auto\">.\u00a0<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_68 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/researcher.life\/blog\/article\/gray-literature-in-research\/#What_is_gray_literature_in_research\" title=\"What is gray literature in research?\u00a0\">What is gray literature in research?\u00a0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/researcher.life\/blog\/article\/gray-literature-in-research\/#Why_is_gray_literature_considered_important_today\" title=\"Why is gray literature considered important today?\u00a0\">Why is gray literature considered important today?\u00a0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/researcher.life\/blog\/article\/gray-literature-in-research\/#Types_of_gray_literature_in_research\" title=\"Types of gray literature in research\u00a0\">Types of gray literature in research\u00a0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/researcher.life\/blog\/article\/gray-literature-in-research\/#Common_gray_literature_databases_and_sources\" title=\"Common gray literature databases and sources\u00a0\">Common gray literature databases and sources\u00a0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/researcher.life\/blog\/article\/gray-literature-in-research\/#Drawbacks_of_using_gray_literature_in_research\" title=\"Drawbacks of using gray literature in research\u00a0\">Drawbacks of using gray literature in research\u00a0<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_is_gray_literature_in_research\"><\/span><b><span data-contrast=\"auto\">What is gray literature in research?<\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span data-contrast=\"auto\">The term <\/span><span data-contrast=\"auto\">\u2018gray literature\u2019<\/span><span data-contrast=\"auto\"> comes from the ambiguity surrounding the legitimacy of this information. <\/span><span data-contrast=\"auto\">Gray literature<\/span><span data-contrast=\"auto\"> refers to a vast body of information produced by individuals or organizations that is published outside of traditional academic publishing channels. <\/span><span data-contrast=\"auto\">Gray literature<\/span><span data-contrast=\"auto\"> is usually not published for commercial gain, not peer reviewed, and not widely disseminated or well represented in indexing databases. Typically self-published or published through non-traditional outlets, <\/span><span data-contrast=\"auto\">gray literature in research<\/span><span data-contrast=\"auto\"> includes a wide range of materials, such as research reports, theses, dissertations, conference proceedings, government documents, technical reports, working papers, and preprints.\u00a0<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Why_is_gray_literature_considered_important_today\"><\/span><b><span data-contrast=\"auto\">Why is <\/span><\/b><b><span data-contrast=\"auto\">gray literature<\/span><\/b><b><span data-contrast=\"auto\"> considered important today?<\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span data-contrast=\"auto\">Gray literature in research<\/span><span data-contrast=\"auto\"> has traditionally been ignored as unverified. However, it is increasingly being considered a legitimate source of information as it provides insights that are unavailable via traditional sources. In fact, researchers looking for information on studies that were rejected by traditional publications because they\u2019ve failed or delivered ambiguous or negative results, may be able to find this in <\/span><span data-contrast=\"auto\">gray literature<\/span><span data-contrast=\"auto\">.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">Gray literature in research<\/span><span data-contrast=\"auto\"> also refers to information and knowledge presented by independent think tanks, professionals and experts who are not associated with academia. It provides researchers a different perspective on things and adds another layer to the research being conducted. Also, <\/span><span data-contrast=\"auto\">gray literature<\/span><span data-contrast=\"auto\"> may be more current and can be communicated more quickly since it does not have to go through formal and established academic editorial processes and publishing channels.\u00a0<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p><a href=\"https:\/\/app.adjust.net.in\/9a5h9w2?campaign=R Blog&amp;adgroup=gray-literature-discovery&amp;creative=banner5&amp;fallback=https%3A%2F%2Fdiscovery.researcher.life%2F%23content_marketing_adjust_blog\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5401 size-full\" src=\"https:\/\/blog.researcher.life\/wp-content\/uploads\/2023\/03\/05_RDiscovery_BlogBanner_640x139px-1.png\" alt=\"\" width=\"640\" height=\"139\" srcset=\"https:\/\/blog.researcher.life\/wp-content\/uploads\/2023\/03\/05_RDiscovery_BlogBanner_640x139px-1.png 640w, https:\/\/blog.researcher.life\/wp-content\/uploads\/2023\/03\/05_RDiscovery_BlogBanner_640x139px-1-300x65.png 300w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Types_of_gray_literature_in_research\"><\/span><b><span data-contrast=\"auto\">Types of <\/span><\/b><b><span data-contrast=\"auto\">gray literature in research<\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span data-contrast=\"auto\">Here are some of the more common types of <\/span><span data-contrast=\"auto\">gray literature<\/span><span data-contrast=\"auto\"> available for researchers:<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<ul>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559684&quot;:-2,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><b><i><span data-contrast=\"auto\">Research Reports:<\/span><\/i><\/b><span data-contrast=\"auto\"> These comprehensive documents summarize the findings of a specific research project and are often commissioned by funding agencies, research institutions, or government bodies. Research reports provide valuable insights and data on various fields of study enabling evidence-based decision making. For example, a comprehensive analysis of the impact of climate change on specific ecosystems.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559684&quot;:-2,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"2\" data-aria-level=\"1\"><b><i><span data-contrast=\"auto\">Technical reports:<\/span><\/i><\/b><span data-contrast=\"auto\"> These are detailed documents that describe research or development projects undertaken by organizations, government agencies, research institutions, or industry organizations. This type of <\/span><span data-contrast=\"auto\">gray literature<\/span><span data-contrast=\"auto\"> provides an in-depth analysis, methodologies, and results that may not be available in other sources. Examples of technical reports include those created by agencies such as NASA and consulting agencies like McKinsey &amp; Company.\u00a0<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559684&quot;:-2,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"3\" data-aria-level=\"1\"><b><i><span data-contrast=\"auto\">Conference proceedings<\/span><\/i><\/b><span data-contrast=\"auto\">: The collections of research presented at academic or professional conferences, including abstracts, full papers, or summaries of presentations are all part of documents tagged as conference proceedings. This type of <\/span><span data-contrast=\"auto\">gray literature in research<\/span><span data-contrast=\"auto\"> enables timely research and gives academics access to latest developments in their field of interest.\u00a0<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559684&quot;:-2,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><b><i><span data-contrast=\"auto\">Government documents:<\/span><\/i><\/b><span data-contrast=\"auto\"> This type of <\/span><span data-contrast=\"auto\">gray literature<\/span><span data-contrast=\"auto\"> includes reports, policy documents, white papers, and other technical documentation produced by government agencies at the local, state, and national level. These often contain valuable statistical data, legislative proposals, and research findings relevant to public policy and governance, which are critical primary sources of information.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559684&quot;:-2,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"2\" data-aria-level=\"1\"><b><i><span data-contrast=\"auto\">Theses and dissertations:<\/span><\/i><\/b> <span data-contrast=\"auto\">Formal academic documents produced by students as part of their graduate-level or doctoral studies,<\/span> <span data-contrast=\"auto\">theses and dissertations are usually available in university libraries or online databases. While considered part of <\/span><span data-contrast=\"auto\">gray literature in research<\/span><span data-contrast=\"auto\">, the detailed documents contribute original research to a specific discipline and can be excellent sources of information.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559684&quot;:-2,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"3\" data-aria-level=\"1\"><b><i><span data-contrast=\"auto\">Pre-prints or working papers: <\/span><\/i><\/b><span data-contrast=\"auto\">These are<\/span> <span data-contrast=\"auto\">early versions of unpublished research papers that have not undergone a formal peer review. Preprints allow researchers to disseminate their findings quickly by uploading a complete draft of their manuscript to a public preprint server and getting feedback from the scientific community before formal peer review. There has been a rapid increase in the number of preprints, especially amid the COVID pandemic, but this is still considered a type of <\/span><span data-contrast=\"auto\">gray literature in research<\/span><span data-contrast=\"auto\">.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559684&quot;:-2,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"4\" data-aria-level=\"1\"><b><i><span data-contrast=\"auto\">Clinical trial data, patents, and technical standards information: <\/span><\/i><\/b><span data-contrast=\"auto\">While<\/span> <span data-contrast=\"auto\">widely<\/span> <span data-contrast=\"auto\">considered <\/span><span data-contrast=\"auto\">gray literature in research<\/span><span data-contrast=\"auto\">, information from these key sources can inform and shape current research conducted by organizations.\u00a0<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Common_gray_literature_databases_and_sources\"><\/span><b><span data-contrast=\"auto\">Common <\/span><\/b><b><span data-contrast=\"auto\">gray literature databases<\/span><\/b><b><span data-contrast=\"auto\"> and sources<\/span><\/b><span data-ccp-props=\"{&quot;134233117&quot;:true,&quot;134233118&quot;:true,&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559685&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:240}\">\u00a0<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span data-contrast=\"auto\">Listed below are some of the most used repositories and curated collections of <\/span><span data-contrast=\"auto\">grey literature<\/span><span data-contrast=\"auto\"> that researchers can tap into:\u00a0<\/span><span data-ccp-props=\"{&quot;134233117&quot;:true,&quot;134233118&quot;:true,&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559685&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<ul>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"2\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559684&quot;:-2,&quot;335559685&quot;:360,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><b><span data-contrast=\"auto\">Institutional repositories <\/span><\/b><span data-contrast=\"auto\">by universities and research institutions are where scholars deposit their theses, dissertations, technical reports, and working papers.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:true,&quot;134233118&quot;:true,&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160,&quot;335559740&quot;:240}\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"2\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559684&quot;:-2,&quot;335559685&quot;:360,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"2\" data-aria-level=\"1\"><b><span data-contrast=\"auto\">Government agencies and departments <\/span><\/b><span data-contrast=\"auto\">produce a significant amount of <\/span><span data-contrast=\"auto\">gray literature<\/span><span data-contrast=\"auto\">, including reports, policy papers, white papers, and technical documents.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:true,&quot;134233118&quot;:true,&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160,&quot;335559740&quot;:240}\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"2\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559684&quot;:-2,&quot;335559685&quot;:360,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"3\" data-aria-level=\"1\"><b><span data-contrast=\"auto\">Research centers and think tanks<\/span><\/b><span data-contrast=\"auto\"> in specific research areas generate <\/span><span data-contrast=\"auto\">gray literature<\/span><span data-contrast=\"auto\"> in the form of research reports, working papers, and policy briefs that provide insights on various topics.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"2\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559684&quot;:-2,&quot;335559685&quot;:360,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"3\" data-aria-level=\"1\"><b><span data-contrast=\"auto\">Academic conferences and symposia<\/span><\/b><span data-contrast=\"auto\"> often publish conference proceedings, which are an excellent source of recent research and emerging trends within specific disciplines.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:true,&quot;134233118&quot;:true,&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160,&quot;335559740&quot;:240}\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"2\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559684&quot;:-2,&quot;335559685&quot;:360,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"3\" data-aria-level=\"1\"><b><span data-contrast=\"auto\">Non-Governmental Organizations (NGOs)<\/span><\/b><span data-contrast=\"auto\"> engaged in research and advocacy work often produce <\/span><span data-contrast=\"auto\">gray literature<\/span><span data-contrast=\"auto\"> to disseminate their findings, raise awareness about specific issues, and influence policy discussions.\u00a0<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"2\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559684&quot;:-2,&quot;335559685&quot;:360,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"3\" data-aria-level=\"1\"><b><span data-contrast=\"auto\">Private companies and industries <\/span><\/b><span data-contrast=\"auto\">generate <\/span><span data-contrast=\"auto\">gray literature<\/span><span data-contrast=\"auto\"> in the form of technical reports, market research studies, and industry-specific publications that offer insights into advancements, market trends, and industry-specific research.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"2\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559684&quot;:-2,&quot;335559685&quot;:360,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"3\" data-aria-level=\"1\"><b><span data-contrast=\"auto\">Funding agencies or research organizations<\/span><\/b><span data-contrast=\"auto\"> produce <\/span><span data-contrast=\"auto\">gray literature<\/span><span data-contrast=\"auto\"> in the form of reports providing detailed information about the objectives, methodologies, and findings of specific projects.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"2\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559684&quot;:-2,&quot;335559685&quot;:360,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"3\" data-aria-level=\"1\"><b><span data-contrast=\"auto\">Professional associations and societies<\/span><\/b><span data-contrast=\"auto\"> in various disciplines often publish <\/span><span data-contrast=\"auto\">gray literature<\/span><span data-contrast=\"auto\">, including guidelines, best practice documents, and reports that cater to professionals in respective fields.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"2\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559684&quot;:-2,&quot;335559685&quot;:360,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"3\" data-aria-level=\"1\"><b><span data-contrast=\"auto\">International organizations<\/span><\/b><span data-contrast=\"auto\"> such as the United Nations (UN), World Bank, and World Health Organization (WHO) produce <\/span><span data-contrast=\"auto\">gray literature<\/span><span data-contrast=\"auto\"> in the form of reports, policy papers, and statistical databases covering a wide range of global issues.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"2\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559684&quot;:-2,&quot;335559685&quot;:360,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"3\" data-aria-level=\"1\"><b><span data-contrast=\"auto\">Online repositories and databases<\/span><\/b><span data-contrast=\"auto\"> collect and curate <\/span><span data-contrast=\"auto\">gray literature<\/span><span data-contrast=\"auto\">, serving as centralized sources of information across research disciplines. These include platforms like OpenGrey, GreySource, and BASE (Bielefeld Academic Search Engine).<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Drawbacks_of_using_gray_literature_in_research\"><\/span><b><span data-contrast=\"auto\">Drawbacks of using <\/span><\/b><b><span data-contrast=\"auto\">gray literature in research<\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span data-contrast=\"auto\">While <\/span><span data-contrast=\"auto\">gray literature<\/span><span data-contrast=\"auto\"> can offer valuable insights and unique perspectives, it is important to consider its limitations and choose carefully when utilizing it for your research. Here are some drawbacks to using only <\/span><span data-contrast=\"auto\">gray literature in research<\/span><span data-contrast=\"auto\">.\u00a0<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<ul>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"2\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559684&quot;:-2,&quot;335559685&quot;:360,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"3\" data-aria-level=\"1\"><b><span data-contrast=\"auto\">Quality control:<\/span><\/b><span data-contrast=\"auto\"> Unlike peer-reviewed publications, <\/span><span data-contrast=\"auto\">gray literature<\/span><span data-contrast=\"auto\"> lacks the rigorous review process conducted by experts in the field. As a result, the quality and validity of the information may vary significantly. It is crucial to critically evaluate the credibility and methodology of the source before integrating it into research.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"2\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559684&quot;:-2,&quot;335559685&quot;:360,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><b><span data-contrast=\"auto\">Accessibility and indexing:<\/span><\/b> <span data-contrast=\"auto\">Gray literature<\/span><span data-contrast=\"auto\"> is often scattered across various sources and may not be easily discoverable through traditional search engines. Researchers might need to utilize specialized databases or contact specific organizations to access this information, which can be time-consuming.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"2\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559684&quot;:-2,&quot;335559685&quot;:360,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"2\" data-aria-level=\"1\"><b><span data-contrast=\"auto\">Limited citations and recognition:<\/span><\/b> <span data-contrast=\"auto\">Gray literature<\/span><span data-contrast=\"auto\"> is generally not accorded the same level of recognition or prestige as peer-reviewed publications. It may be challenging to cite <\/span><span data-contrast=\"auto\">gray literature in research<\/span><span data-contrast=\"auto\"> writing, which could potentially affect the credibility and acceptance of the paper.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><i><span data-contrast=\"auto\">R Discovery is a literature search and research reading platform that accelerates your research discovery journey by keeping you updated on the latest, most relevant scholarly content. With 250M+ research articles sourced from trusted aggregators like CrossRef, Unpaywall, PubMed, PubMed Central, Open Alex and top publishing houses like Springer Nature, JAMA, IOP, Taylor &amp; Francis, NEJM, BMJ, Karger, SAGE, Emerald Publishing and more, R Discovery puts a world of research at your fingertips.<\/span><\/i><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559738&quot;:0,&quot;335559739&quot;:240}\">\u00a0<\/span><\/p>\n<p><b><i><span data-contrast=\"auto\">Try R Discovery Prime FREE for 1 week or upgrade at just US$72 a year<\/span><\/i><\/b><i><span data-contrast=\"auto\"> to access premium features that let you listen to research on the go, read in your language, collaborate with peers, auto sync with reference managers, and much more. Choose a simpler, smarter way to find and read research \u2013 <\/span><\/i><b><i><span data-contrast=\"auto\">Download the app and <\/span><\/i><\/b><a href=\"https:\/\/rdiscoverymarketing.page.link\/gray-literature-in-research\"><b><i><span data-contrast=\"none\">start your free 7-day trial today<\/span><\/i><\/b><\/a><b><i><span data-contrast=\"auto\">!<\/span><\/i><\/b><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559738&quot;:0,&quot;335559739&quot;:240}\">\u00a0<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In academia, researchers traditionally turn to peer-reviewed research publications and academic journals as reliable and verified sources of information. Over the years, however, gray literature<\/p>\n","protected":false},"author":3,"featured_media":5969,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_editorskit_title_hidden":false,"_editorskit_reading_time":0,"_editorskit_is_block_options_detached":false,"_editorskit_block_options_position":"{}","footnotes":""},"categories":[37,487],"tags":[],"class_list":["post-5967","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-r-discovery","category-research-reading"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Gray Literature in Research: Definition, Types, Sources and Drawbacks | Researcher. Life<\/title>\n<meta name=\"description\" content=\"Gray literature has emerged as an important source of information for researchers, apart from the traditional peer-reviewed publications. 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