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In the social sciences, triangulation is often used to indicate that two (or more) methods are used in a study in order to check the results of one and the same subject. "The concept of triangulation is borrowed from navigational and land surveying techniques that determine a single point in space with the convergence of measurements taken from two other distinct points."〔Rothbauer, Paulette (2008) "Triangulation." In Given, Lisa (Ed.), "The SAGE Encyclopedia of Qualitative Research Methods." Sage Publications. pp. 892-894.〕 The idea is that one can be more confident with a result if different methods lead to the same result. Triangulation is a powerful technique that facilitates validation of data through cross verification from two or more sources. In particular, it refers to the application and combination of several research methods in the study of the same phenomenon.〔Bogdan, R. C. & Biklen, S. K. (2006). ''Qualitative research in education: An introduction to theory and methods.'' Allyn & Bacon. ISBN 978-0-205-51225-6.〕 *It can be used in both quantitative (validation) and qualitative (inquiry) studies. *It is a method-appropriate strategy of founding the credibility of qualitative analyses. *It becomes an alternative to traditional criteria like reliability and validity. *It is the preferred line in the social sciences. By combining multiple observers, theories, methods, and empirical materials, researchers can hope to overcome the weakness or intrinsic biases and the problems that come from single method, single-observer and single-theory studies. ==Purpose== The purpose of triangulation in qualitative research is to increase the credibility and validity of the results. Several scholars have aimed to define triangulation throughout the years. *Cohen and Manion (2000) define triangulation as an "attempt to map out, or explain more fully, the richness and complexity of human behavior by studying it from more than one standpoint."〔Cohen, L., & Manion, L. (2000). ''Research methods in education.'' Routledge. p. 254. (5th edition).〕 *Altrichter et al. (2008) contend that triangulation "gives a more detailed and balanced picture of the situation." 〔Altrichter, H., Feldman, A., Posch, P. & Somekh, B. (2008). ''Teachers investigate their work; An introduction to action research across the professions.'' Routledge. p. 147. (2nd edition).〕 *According to O’Donoghue and Punch (2003), triangulation is a “method of cross-checking data from multiple sources to search for regularities in the research data."〔O'Donoghue, T., Punch K. (2003). ''Qualitative Educational Research in Action: Doing and Reflecting.'' Routledge. p.78.〕 *According to Erina Audrey (2013) “Triangulation also crosschecks information to produce accurate results for certainty in data collection.” 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「Triangulation (social science)」の詳細全文を読む スポンサード リンク
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