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A literature review is a text of a scholarly paper, which includes the current knowledge including substantive findings, as well as theoretical and methodological contributions to a particular topic. Literature reviews use secondary sources, and do not report new or original experimental work.〔Baglione, L. (2012) ''Writing a Research Paper in Political Science''. Thousand Oaks: CQ Press.〕 ==Types== Most often associated with academic-oriented literature, such as a thesis, dissertation or a peer-reviewed journal article, a literature review usually precedes the methodology and results section although this is not always the case. Literature reviews are also common in a research proposal or prospectus (the document that is approved before a student formally begins a dissertation or thesis). Its main goals are to situate the current study within the body of literature and to provide context for the particular reader. Literature reviews are a basis for research in nearly every academic field.〔Lamb, David. "(The Uses of Analysis: Rhetorical Analysis, Article Analysis, and the Literature Review )". Academic Writing Tutor. Retrieved 10 September 2013.〕 The main types of literature reviews are: Evaluative Review Exploratory Review Instrumental Review 〔Research methods for graduate business and social science students, John Adams; et al〕 A systematic review is a literature review focused on a research question, trying to identify, appraise, select and synthesize all high quality research evidence and arguments relevant to that question. A meta analysis is typically a systematic review using statistical methods to effectively combine the data used on all selected studies to produce a more reliable result. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「literature review」の詳細全文を読む スポンサード リンク
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