摘要：Close examination of parameters is, as an initial step to our everyday study, essential to prove the hypothesis. Those parameters have to be selected from the reliable and valid measurement method to the hypothesis. The concept of reliability and validity, that is, consistency of the measurement and rationality of the measurement components respectively, lies at the root of analysis of data. This reports describes reliability and validity and their roles in the study according to the reports of J.M. Rothstein.
