Reliability and Validity In order for research data to be of value and of use, they must be both reliable and valid.
Get Full Essay Get access to this section to get all help you need with your essay and educational issues. Get Access Reliability and Validity Paper Essay Sample Research and testing are used in human services to provide the most effective program achievable.
In the same way researchers employ vast amount of data collection methods. Additionally, it is important to understand how effective these instruments function.
Equally important, it is necessary to know the magnitude to which the outcomes produces the same findings in the future. Moreover, these are reasons researchers study different types of validity and reliability. The testing methods should include both reliability and validity as well as remain consistent and specific.
I will discuss types of reliability, types of validity, and present examples of how each apply to human services research.
|Social Research Methods - Knowledge Base - Reliability & Validity||Hire Writer The last kind of reliability that I will discuss is the test-retest reliability.|
|Social Research Methods - Knowledge Base - Reliability & Validity||Here, I want to show you two ways you can think about their relationship. One of my favorite metaphors for the relationship between reliability is that of the target.|
|Reliability and Validity Paper | Essay Example||Validity refers to how well a test measures what it is purported to measure.|
Finally, the writer will discuss methods of gathering data, the instruments used, and why it is imperative these methods must have reliability and validity. The following are five types of reliability: Next is item-to-item reliability, which refers to the reliability of every item on average.
However, if the questions do not demonstrate any relationship the survey is not of much use. If a group of participants take the identical test, which is taken by him or her at different times, he or she may score higher. This is because him or her having a previous experience of the material.
On the other hand, alternate-form reliability attempts to eliminate this by using instruments, which measure identical componentswhile using a different form. Every type of reliability is put to use in human services research. It is important the researcher ensure the tests he or she is uses are reliable.
For instance with the alternate-form reliability, the researcher gives his or her participant a test, which describes his or her characteristics, then gives the participant the same test, but changes the wording, the results ought to be the same.
If the answers are different, the test will need revising. This causes the researcher to look into the reliabilities of internal-consistency, item-to-item, and judge-to-judge. The outcomes of these will determine how reliable the characteristics test is or stands.
There are eight types of validity, which are construct, content, convergent and discriminant, criterion, external, face, internal, and statistical-conclusion validity.
Additionally, when developing tests, which measures personality e. Content validity represents how well the test uses portions of the content it needs to cover. However, content validity is not to be consorted with face validity.Describing observation and measurement as well as how each relate to human services research were discussed in this paper.
Furthermore, data collection methods and the importance of reliability and validity in data collection were also examined. Reliability is an essential component of validity but, on its own, is not a sufficient measure of validity.
A test can be reliable but not valid, whereas a test cannot be valid yet unreliable. A test can be reliable but not valid, whereas a test cannot be valid yet unreliable. 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).
Test Validity and Reliability Whenever a test or other measuring device is used as part of the data collection process, the validity and reliability of that we would not want to use a measuring device for research that was not truly measuring what we purport it to measure.
An obvious concern relates to the validity of the test against. OBSERVATION AND MEASUREMENT AS THEY RELATE TO HUMAN SERVICES RESEARCH. Social scientists apply various tools in their studies. The reliability and validity of the research instruments should be confirmed prior to actual data collection (Drost, ).
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.