Validity and reliability pdf

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Reliability and validity are concepts used to evaluate the quality of research. They indicate how well a method, technique or test measures something. Now, based on the empirical data, we can assess the reliability and validity of our scale. DETERMINING RELIABILITY. 1. Stability (Test-Retest Correlation). RELIABILITY AND VALIDITY INTRODUCTION For every dimension of interest and Download Free PDF These two concepts are validity and reliability. To use measurement instruments appropriately in clinical practice, the extent to which they are reliable, valid and usable must be established. Key words: