What method involves the researcher collecting data themselves?

The method that involves the researcher collecting data themselves is known as primary methods. These methods are characterized by the direct gathering of information through various means such as surveys, interviews, observations, or experiments. This approach allows researchers to have firsthand experience with the data and ensures that the information collected is tailored to the specific research questions they are investigating. By collecting their own data, researchers can also ensure the accuracy and relevance of the information, as it is directly linked to their study’s context and objectives.

In contrast, secondary methods utilize data that has already been collected and published by others, often for different research purposes. Tertiary methods involve the synthesis of existing research and information but do not include original data collection. Private methods do not constitute an established category in research terminology specific to data collection and may create confusion about their methodological implications. Thus, primary methods stand firmly as the choice that defines a researcher's active role in the data collection process.