Writing a good research methodology means providing an accurate, detailed accounting of the methods and procedures that were used in the study or the experiment. Specifics about participants, materials, design and methods must be included. Good research methodology provides enough information for another person to follow precisely in order to replicate the work and check the results.
Other researchers must be able to duplicate the experiment to test whether the findings are verifiable. A good description of the research methodology used in an experiment allows other researchers to look for flaws in its design and to determine the validity of the results. This is the basis of scientific method.
If the research involves human subjects, then include a detailed description of who and how many participated along with how the participants were selected. Describe all materials used for the study, including equipment, written materials and testing instruments. Identify the study's design and any variables or controls employed.
Chronological accounting of the steps involved is key to writing good research methodology. Indicate what participants were asked to do, how measurements were taken and any calculations made to raw data collected. Specify statistical techniques applied to the data to reach your conclusions. Be clear, concise and thorough. Write out the steps in the order that they were completed.