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This article aims to demystify the steps in the measurement scale design and development in marketing and management field, and it presents an overview of the reliability and validity aspects, to help researchers to develop appropriate measurement scales and to improve their development process. More specifically, it explains the necessary steps of tool development. Conceptual definition in which items are generated and a content validation is checked. The next step is a questionnaire administration in that Pre-test is conducted, sample size is determined, and reliability is calculated, next, to reduce the initial item number the exploratory factor analysis is conducted, and internal consistency is examined, finally the confirmatory factor analysis is used to test the significance of the scale, and to test the convergent and discriminate validity.

JEL Classification M31، M30، M10


Construct Concept Measurement scale Validity Reliability

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