The Principles Of Reliability And Validity Essay - 928 Words

Introduction If you are looking for scientific proof, then validity and reliability are what you need. In the work by Xie, Huang (2014) they describe the following: The principles of reliability and validity are fundamental cornerstones of the scientific method. Reliability is defined as the extent to which a measure is repeated under ideal conditions. Validity refers to the degree to which a test measures what it purports to measure. Establishing good quality studies need both high reliability and high validity. (p.326). Both of these concepts are worthy of exploration, and understanding them is crucial for evaluating, designing, and performing scientific studies. Reliability Reliability is about consistency. For data to have reliability, it will need stability, internal reliability, and inter-observer reliability. Stability. If a measure does not fluctuate over time, it is considered to have stability. Data collected at one period of time and then collected again at a different period in time will not have a great deal of variability. Stability can be tested by administering a test at one point in time and then re-administering the same test under the same conditions. Internal Reliability Internal reliability. This refers to the scale that is used to measure data. If the scale is consistent, then it is said to have internal reliability. We need to be sure that whatever variation we are measuring is actually produced by the variables, not by theShow MoreRelatedExploring Reliability and Validity765 Words   |  4 PagesExploring Reliability and Validity Lynetric Rivers Liberty University Abstract This paper will focus on the types of reliability and validity used in the Values and Motives Questionnaire. Also this writer will be investigating areas of concerns and strengths as it relates to the Values and Motives Questionnaire, well as formulating an opinion of the test (VMQ) with the material presented. This writer will further conveying information concerning the sample size, nature of population thatRead MoreSelection Interaction Of Selection And Selection920 Words   |  4 PagesSelection Interaction The last threat to internal validity is ‘selection interaction’. It is the interaction of the other threats with the selection threat. The most common of these threats is the interaction of selection threat with maturation. This combination of selection-maturation threat is concerned with different rates of growth between the two groups between the pre and post test (Slack and Draugalis, 2001). 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As well as â€Å"LOTS†, researchers must form a theory to â€Å"decide what to measure and how to measureRead MoreExploring Reliability and Validity1068 Words   |  5 Pagesï » ¿ Exploring Reliability and Validity- Values and Motives Questionnaire Exploring Reliability and Validity- Values and Motives Questionnaire The Values and Motives Questionnaire, also known as the Values and Motives Inventory, is designed to examine a person’s motivation in relation to his values and activities. In order to ensure a comprehensive understanding of values, the VMQ assess three distinct areas, including: interpersonal, intrinsic, and extrinsic. Interpersonal values, accordingRead MoreReliability and Validity Paper1289 Words   |  6 PagesReliability and Validity Paper University of Phoenix BSHS 352 The profession of human service uses an enormous quantify of information to conduct test in the process of service delivery. The data assembled goes to a panel of assessment when deciding the option that will best fit the interest of the population, or the experiment idea in question. The content of this paper will define, and describe the different types of reliability, and validity. In addition display examples of data collectionRead MoreEssay on validity reliability1475 Words   |  6 Pagesï » ¿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. 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TechnicalRead MoreSystematic Procedure To Collect Essential Data And These1345 Words   |  6 PagesStandardization refers to proper item selection, high reliability and validity of the instrument to be used in collection of data. And second one is construction of a tool by researcher for present study, constructing of tool for the study needs lot of care and caution . Construction of tool is a time taking and expansive affair number of steps to be followed such as piloting of the pool of questions, difficulty value, difficulty index, validity and reliability has to observed, tested by researcher. Consultation