Based on identified interpretation to qualitative research, and common definitions to the notions of validity and reliability, this essay made an attempt to concertize the three concepts and then to make a correlation amongst them.
To record the observations consistently is to have a reliable method. Regarding reliability, I argued that in qualitative research it refers to the methods of research conduct and to what extend the concepts used, appropriately, describe what they ought to describe.
I believe that managing the tension between reality and representation, is a conclusion that we may arrive at, after identifying our approach and defining our research strategy.
Make sure your goals and objectives are clearly defined and operationalized. Sage Lawrence Neuman, W. To put it in other words, dependability is concerned with the idea whether the findings liable to apply at other times and confirmability, concerns the notion whether researchers allow their values to introduce to a high degree.
Here, you can clearly see that reliability is directly related to the variability of your measure. The difficulty and disagreement lies in finding answers to questions about a subject matter that is in slow motion and continuous change, to identify and observe a moving target: Here, we are comparing two different concepts verbal versus math and so we would expect the relationship to be lower than a comparison of the same concept with itself e.
In order to have confidence that a test is valid and therefore the inferences we make based on the test scores are validall three kinds of validity evidence should be considered. Qualitative and Quantitative Approaches 5th ed. The assessment should reflect the content area in its entirety.
Thus, this essay confirmed the possibility to achieve a properly reliable qualitative research, and argued that the degree of reliability in a qualitative study can be improved with proper tabulated data of findings that are open to supplementary examination by both researchers and readers to enable them articulate their views about the position of the researched, in relation to the research and the researcher.
We could do this by estimating the reliability of the written test through a test-retest correlation, parallel forms, or an internal consistency measure See Types of Reliability. While a qualitative study might attempt to understand what people mean by what they do in their every day behaviour, here the method differs; interviews and focus groups are appropriate.
That is, you are consistently and systematically measuring the wrong value for all respondents. Validity refers to the accuracy of an assessment -- whether or not it measures what it is supposed to measure.
Furthermore, imagine that we can measure each of these in two ways. Expectations of students should be written down. Also for reliability to be calculated, it is mandatory to the qualitative researchers to document their procedure and to reveal that categories have been used consistently.
The more you are off for that person, the further you are from the center.
Fourth comprehensive data treatment, meaning all parts of the data must at some point be inspected and analysed, and finally, using appropriate tabulation, to give the reader a chance to gain a sense of the flavour of the data as whole Standards for educational and psychological testing.
Validity refers to how well a test measures what it is purported to measure. Here, we are comparing the verbal written exam with the math teacher observation rating.
For a test to be reliable, it also needs to be valid. If the stakeholders do not believe the measure is an accurate assessment of the ability, they may become disengaged with the task. If the measure can provide information that students are lacking knowledge in a certain area, for instance the Civil Rights Movement, then that assessment tool is providing meaningful information that can be used to improve the course or program requirements.
Based on the foregoing definitions and classifications, it can be seen that validity means the correct correlation between data and conclusion, but what is more problematic is the achievement of such an accurate relationship.
This is not a challenge only to the qualitative study but to the quantitative study as well. Your measure is both reliable and valid I bet you never thought of Robin Hood in those terms before. On one end is the situation where the concepts and methods of measurement are the same reliability and on the other is the situation where concepts and methods of measurement are different very discriminant validity.
Therefore, reliability, validity and triangulation, if they are relevant research concepts, particularly from a qualitative point of view, have to be redefined in order to reflect the multiple ways of establishing truth. Reliability and Validity are important aspects of research in the human services field.
Without reliability and validity researchers results would be useless. This paper will define the types of reliability and validity and give examples of each.
Examples of a data collection method and data collection instruments used in human services and managerial research will be given.
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Validity simply means that a test or instrument is accurately measuring what it’s supposed to. Click on the link to visit the individual pages with examples for each type: Concurrent Validity.
Content Validity. Convergent Validity. Consequential Validity.
Criterion Validity. Reliability is a necessary ingredient for determining the overall validity of a scientific experiment and enhancing the strength of the results. Debate between social and pure scientists, concerning reliability, is robust and ongoing.
Realiability and Validity Paper Reliability and Validity Reliability and Validity Paper * There different types of reliability, they are Alternate-form reliability, which is the degree of relatedness of different forms of the same test, Internal-consistency reliability, which .Realiability and validity paper