Content Validity and Reliability of the Measurement Tools in Educational, Behavioral, and Health Sciences Research

Abstract

Development and assessment of measurement tools are important stages in the research processes regarding social, educational, and medical sciences, which mainly focus on the measurement of characteristics, qualitative variables, and abstract variables. Validity and reliability are two important components of researcher-made tools. The quality of assessment and confirming of validity and reliability are major concerns in research. Before publishing their findings, researchers are required to provide a report on the quality assessment of the validity and reliability of measurement tools. Precision in explaining these features could lay the ground for commenting on the trustworthiness and validation of the obtained findings, as well as their comparison with previous studies. If the validity and reliability of research instruments are not confirmed, the endeavors of researchers might be degraded. The present study aimed to elaborate on the significance of validity and reliability indices in medical research and the qualitative and quantitative assessment of content validity on confirming the reliability of measurement tools.

Keywords

• Psychometrics
• Content Validity
• Face Validity
• Reliability
• Questionnaire