the difference between reliability and validity

Reliability is about the consistency of a measure, and validity is about the accuracy of a measure. They indicate how well a method, technique, or test measures something. Validity refers to the accuracy of a measure (whether the results really do represent what they are supposed to measure). Reliability and validity are concepts used to evaluate the quality of research. Making real-life conditions to be able to observe a person's reactions describes. Reliability and validity are both about how well a method measures something: Reliability refers to the consistency of a measure (whether the results can be reproduced under the same conditions). A measurement is reliable if you repeat it and get the same or a similar answer over and over again, and an experiment is. What is the difference between validity and reliablity? Reliability measures if what you are testing for is correct validity means you can use the method over and over again Validity measures if what you are testing for is correct sometimes reliability means you can use the method over and over again Validity measures if what you are testing for is incorrect reliability means you cannot use the method over and over again Validity measures if what you are testing for is correct: reliability means you can use the method over and over again Reliability is an examination of how consistent and stable the results of an assessment are. Validity is defined as the extent to which a concept is accurately measured in a quantitative study.

The difference between reliability and validity