Q: How to write operational definition of terms?

Operational definition of terms refers to a detailed 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. Data that is not defined runs the risk of being inconsistent and might not give the same results when the study is replicated. Often we assume that those collecting the data understand what to do and how to complete the task. However, people may have differing views and interpretations of the same thing, and this will affect the data collection. The only way to ensure that the data is consistent is by means of a detailed operational definition of terms. 

The operational definition of terms is included in the Methods section. For example, an example of operational definition of the term "weight" of an object would be something like this: "weight refers to the numbers that appear when an object is placed on a weighing scale."

For more detailed guidance on how to write operational definition of terms, you can refer to this article.  

Related reading: 

• How to write the Methods section of a research paper