When performing research based on construct, it is critical that you have a solid Operational definition. When you have a solid Operational definition, people reading your research have a better sense about what exactly what is being measured and why.
Operational definition of terms means a robust explanation of the technical terms and measurements used during data collection. This is done to standardize the data. Whenever data is being collected, it is necessary to clearly define how to collect the data.
Therefore, the correct answer is operational definition.
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