You CAN have good reliability WITHOUT validity. Difference between reliability and validity • Reliability: the degree to which a measurement procedure produces similar outcomes when it is repeated. Reliability vs. Validity in Qualitative Research: Which is Reliability & Validity ? A researcher, wanting to measure whether recreational activities have a negative effect on grade point average in high school students, might conduct a survey asking how many students drive to school and then attempt to find a correlation between these two factors. That requires you have some other test or standard to compare with. Reliability refers to the degree to which scale produces consistent results, when repeated measurements are made. Face validity; Face validity as the name suggests shows the face-off value of the research or the measures used in the research. Module 3: Reliability (screen 2 of 4) Reliability and Validity. There can several examples to illustrate internal and external validity in research. 100 Also with evidence of reliability and validity, the Rural Active Living Perceived Environmental Support Scale (RALPESS) can be used to assess participants’ perceptions of … You can attain consistent scores, but the test might not be measuring what you think you're measuring. Validity. Validity is defined as the extent to which a concept is accurately measured in a quantitative study. For example, imagine a researcher who decides to measure the intelligence of a sample of students. Now, let us show in a tabular form the difference between validity and reliability. Reliability and validity are two sides of the coin of accurate measurements. • E.g., gender, birthplace, mother’s name— should be the same always— • Validity: tests for determining whether a Related Information: Validity Example. Examples . For example, a customer questionnaire asking for simple yes or no answers could be judged for internal consistency reliability. This will further simplify the meanings and applications of these terms. For example: Validity pertains to the connection between the purpose of the research and which data the researcher chooses to quantify that purpose. For example, Types of validity. For example, a survey designed to explore depression but which actually measures anxiety would not be considered valid. Main Differences Between Validity vs Reliability. Reliability is necessary for validity, but not sufficient (more information is needed). Face validity is not an authentic way to check the validity of the research. Validity means you are measuring what you claim to be measuring. As mentioned in Key Concepts, reliability and validity are closely related.To better understand this relationship, let's step out of the world of testing and onto a bathroom scale. 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