Reliability, Validity and P Values

Reliability, Validity and P Values

Introduction

Sustainability of the results of the test or test-retest reliability is the possibility of obtaining the same results in the subjects in the various cases. Sustainability is defined by repeated testing (retest) which is a method that is proposed to hold a few measurements with a certain period of time (from one week to one year) in the same test. If the correlation between the results of different measurements is high, then the test is reliable enough. The least satisfactory test-retest reliability for the value is 0.5 (Cronbach & Richard, 2004). This paper ...