to Parahoo (2006)‚ in quantitative studies reliability and validity are two of the most important concept used by researcher to evaluate the quality of the study that is carried out. Reliability and validity in research refer specifically to the measurement of data as they will be used to answer the research question. In most cases‚ the instrument that measures the variable is the central issues in determining the reliability and validity of the data. Whatever data collection method is used‚ the intent
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two aspects of validity‚ internal validity and external validity. Internal validity refers to an approximate truth about inferences regarding causal relationships. Internal validity is only necessary in circumstances where there is a need to establish a cause and effect relationship. External validity is closely related to generalizing‚ and the ability to generalize a particular study to other people and other situations. This short paper will discuss both internal and external validity‚ and the threats
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Reliability‚ Validity and Accuracy - what do they mean? (To be read in conjunction with an article originally published in Curriculum Support‚ Science‚ 2001 Vol. 6 No. 3) Reliability and validity are two terms that continue to cause problems for teachers and students. Students in Stage 4/5 are required to evaluate evidence for reliability and validity. In Stage 6 they are required to discuss and explain how they would improve the validity and reliability of a first-hand investigation. They could
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Reliability and Validity Researchers tend to be peculiar with how they conduct their study and which study method they choose to implement on their subjects. When various tools are examined for measure in behavioral research‚ researchers tend to prefer high validity and reliability (Rosnow & Rosenthal‚ 2008). To understand this concept‚ one must comprehend the meaning and the difference between reliability and validity and how this applies to human services research. Without the full knowledge
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VALIDITY AND RELIABILITY For the statistical consultant working with social science researchers the estimation of reliability and validity is a task frequently encountered. Measurement issues differ in the social sciences in that they are related to the quantification of abstract‚ intangible and unobservable constructs. In many instances‚ then‚ the meaning of quantities is only inferred. Let us begin by a general description of the paradigm that we are dealing with. Most concepts in the behavioral
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Should Racial Profiling be Practiced? Ever since the September 11th attacks on the World Trade Center‚ America has been on high alert because of terrorists. People are hesitant to get on airplanes because of the other people that they sometimes see on the planes. They sometimes see persons of the same race of those who attacked on September 11 and are skeptical of them. This is known as racial profiling‚ judging a book by its cover. Law enforcement should not be able to use racial profiling as a practice
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Racial Profiling Ariyana Woods Professor D English 1020 February 13‚ 2013 Ariyana Woods Professor D English 1020 13 February 2013 Racial Profiling In the 21st Century Racial profiling is a big issue. Many people have been victimized because of cops and other high authorities’ senseless attitudes on how to handle the law. What people have to realize is that racial profiling does happen to innocent people who are mostly targeted or pursued because of their race or sometimes even because
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A paperless society? Not so fast. By Nicholas A. Basbanes December 8‚ 2013 Predictions of a paperless society have been bandied about for close to half a century‚ driven by an unbridled faith that technology would eliminate the need for something as old-fashioned as record-keeping on pulverized cellulose. There is no denying‚ of course‚ that seismic changes have taken place or that they are everywhere apparent. Technological changes have certainly taken a toll on the pulp and paper industries
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Discuss the reliability and validity of Diagnosis There are many major systems of diagnoses worldwide‚ including the Diagnostic and Statistical Manual of Mental Health Disorders (DSM)‚ International Classification of Diseases (ICD)‚ and the Chinese Classification of Mental Disorders (CCMD). The DSM is one of the most widely used systems of diagnosis‚ and has undergone several editions. It is currently in its fourth edition. Diagnosis systems function to categorize and diagnose patients with mental
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Like internal validity‚ there can also be threats to external validity‚ & this can be an explanation of how researchers may be wrong in making a generalisation. For instance‚ researchers may conclude that the results of their study (which was done in a specific place‚ with certain types of people‚ & at a specific time) could be generalised to another context. For instance it could have been at another place‚ with different people‚ at a later time‚ even if these factors are only slightly different
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