Which sampling method is primarily based on the researcher’s discretion?

Judgement sampling is a non-probability sampling method where the selection of participants is based on the researcher's assessment and discretion. This approach allows the researcher to choose specific individuals who they believe best represent the population being studied, making decisions based on their experience, knowledge, and understanding of the subject rather than random selection.

This method can be particularly useful in exploratory research or when the population is hard to reach. By relying on their judgement, researchers can focus on individuals who possess certain characteristics or insights that might be relevant to the research goals. This gives them control in the sampling process but may introduce bias, as the sample may not be representative of the broader population. Overall, judgement sampling is instrumental when the quality of information is prioritized over statistical representativeness.