UNESCO's scientific contributions
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It was automatically created by ResearchGate to create a record of this author's body of work. We create such pages to advance our goal of creating and maintaining the most comprehensive scientific repository possible. In doing so, we process publicly available (personal) data relating to the author as a member of the scientific community.
If you're a ResearchGate member, you can follow this page to keep up with this author's work.
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Citations
... Validity of an instrument is the degree of how accurate an instrument measures a certain feature without interfering with other features (Doganay and Karip, 2006). In order to so how accurate an instrument measures a certain feature, either a sample previously known to what degree it is valid to measure this certain feature or another measurement tool that is known to be valid to measure the same feature should be available (Turgut, 1995). Item analysis is recommended to increase the validity of the test. ...
