First of all, regarding the design reliability, the students are asked to complete four different writing tasks in which they can demonstrate their writing skills. To enhance the test reliability, we wrote clear and unambiguous instructions for all four tasks. We were rigorous when writing the items to not let any personal interpretation of the questions possible. To reduce the dependence on reading, we used simple words and sentence structures that the students have encountered before. To verify
credibility of a research (No author, 2018). The data was valid as multiple trials were conducted (5 trials) and it was a fair test so therefore it must also be reliable. Reliability is the repeatability and the quality of being trustworthy or of performing well (Oxford, 2018). The factors that effected the validity and reliability of the results included were there were only three different pH solutions (pH 4, pH 7, pH1 0) used in this experiment which does not give an accurate result on which pH
Validity and reliability are two structural fundamental tools in determining the accuracy and purposeful measurement of subject in question. According to Boswell & Cannon 2014, reliability and accuracy are not a determination of validity but are a part of validity’s purposeful measurement. Validity is categorized as logical or statistical and is used to understand or compare subject being measured. For this study, testing was done prior and post simulation and debriefing interventions measuring knowledge
Exploring Reliability and Validity The Values and Motives Questionnaire looks to assess the motivation of an individual as their values simultaneously interact with the tasks they engage in and are confronted with (“Values and Motives”, n.d, p. 10). The values explored in this instrument were distributed in three categories, which examine intrinsic, extrinsic, and interpersonal principles (“Values and Motives”, n.d, pp. 11-13). To efficiently examine the accuracy and legitimacy of this questionnaire
Reliability The reliability of an assessment piece ensures that consistent and stable results are achieved (Black, 2015). By incorporating guidelines that state students are to use “collage materials provided” (Black, 2015. Assignment One, Appendix Two), when creating their animal habitats, the reliable factor of this assessment is strengthened. This allows all students to be marked to the same criteria, and have an identical understanding of the task. Group work is identified as a key factor
measurement error. So retest, equivalent forms and split-half reliability are determined through correlation. Cronbach's alpha is a statistic that normally used in measure the internal consistency or reliability of a instrument (Mohsen and Dennick, 2011). The instrument cannot be valid unless it is reliable. And the reliability of the instrument does not depend on validity. The most used of cronbach's alpha is to measure the reliability. The cronbach's alpha is expressed as a number between 0 and
3.6.2 The Reliability of Instruments Coolican (2008) characterizes reliability as a degree of consistency in giving comparable results on various however practically identical events. Reliability relates to consistency of a measure either across different testing (external) or within itself (internal). Test re-test of instruments was done to test reliability of the instruments. Scores from both tests were subjected to correlation test and a correlation co-efficient of 0.78 was established. Pearson
Validity and Reliability A key component of using evidence-based practices is to review the best available data from multiple sources to ensure that a quality decisions. (Barends, Rousseau, & Briner, 2014). To identify the best available data, one can begin by questioning the validity and reliability of a study. Validity and reliability in evidence-based research is essential to the success of a research paper. Validity is concerned with the extent to which the research measures what it designed
Reliability and Validity Thomas and Christiansen (2011) contribute the chapter, “Measurement Theory in Research” to Understanding Research in Clinical and Counseling Psychology, in order to highlight the importance of reliability, validity, and choosing outcome measures in psychological research (Thomas & Hersen, 2011). Concepts addressed by the authors, such as reliability and validity, are fundamental and the basis of empirically sound research. In each of the sections addressed, the authors describe
Polit & Beck (2014) state “reliability is the consistency with which an instrument measures the attribute” (p.202). The less variation in repeated measurements, the more reliable the tool is (Polit & Beck, 2014, p.202). A reliable tool also measures accuracy in that it needs to capture true scores; an accurate tool maximizes the true score component and minimizes the error component (Polit & Beck, 2014). Reliable measures need to be stable, consistent, and equal. Stability refers “to the degree to