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Research Methods- Validity Instructor Institution Date Research methods- Validity Introduction Validity is a very significant component of any scientific research. Initially, validity was regarded as a logical positivist concept and therefore restricted to quantitative research but further developments in scientific studies began to incorporate the concept of validity in qualitative research…
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Download file to see previous pages It refers to the degree to which a scientific concept, measurement or conclusion has been founded to the real concepts and how it accurately corresponds to the real world (Brains, & Manheim, 2011). Basically, validity is used to measure the soundness of scientific research and to test if the study really answers what it was intended to. The concept of validity applies in both research designs and research methods. In quantitative research, validity is determined based on various empirical concepts such as objectivity of the research, universality, truth, deductive reasoning, tangible evidence and mathematical truths among others. A valid quantitative research is one that is very strong and that which is consistent with universal laws and whose methods and conclusions can be verified objectively (Cozby, 2001). These considerations ensure that scientific research methods are very strong and increase the degree to which the finding from valid research can be trusted and relied upon. Validity is also used in qualitative research to maintain objectivity and universal application of scientific concepts. Validity is therefore important in analyzing the usefulness, appropriateness and meaningfulness of scientific research studies. Validity in data collection helps to ensure that the phenomenon chosen for scientific study really represent the intended population of study and that they can be relied upon to make appropriate objective conclusions (Brains, Willnat, Manheim, Rich 2011). Body Scientific studies can be affected by various different factors, which may be either internal or external to the research but have tremendous influence on the findings of the research to the extent that they can invalidate the study. It is necessary to control all the factors that can negatively impact on the scientific study in order to boost the validity and reliability of the study. The concept of validity is important in research because it helps the researcher to determine what types of tests and methods are cost effective, ethical and are appropriate for use in a particular study. An invalid research cannot be used to make any scientific generalizations and cannot be taken seriously for scientific purposes (Kendler, 2006). Validity should not however be confused with reliability in research. Whereas validity has to do with how strong a scientific study is in relation to the real world, reliability has to do with the consistency of research findings if the study is to be replicated under similar conditions by other independent researchers. A study can be proven to be reliable without necessarily being valid and vice versa. Despite being different, the two concepts are key components of any scientific research and both should be met in order for a study to achieve its intended objectives. There are four main types of validity in scientific research namely internal, external, statistical conclusion, and construct validity. Each of these types of validity has a different approach to validity. They are also used to measure different aspects of scientific study and can be used to assess various aspects of the study to ensure all threats to validity are brought under control (Brains & Manheim, 2011). Each of the types of validity faces its own threats that may inhibit the validity of the ...Download file to see next pagesRead More
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