In purposive sampling, participants are selected based on what criteria?

In purposive sampling, participants are selected based on researcher-defined characteristics and criteria. This method is designed to target a specific group of individuals who possess particular qualities or experience relevant to the research question. It is not a random selection; rather, it involves a strategic approach to ensure that the sample reflects the specific demographic or characteristics deemed important by the researcher.

This sampling technique is often used in qualitative research where the goal is to gain insight from a well-defined group. For instance, if a study aims to understand the experiences of individuals who have gone through a specific therapeutic intervention, the researcher will intentionally select participants who have experienced that therapy rather than a random assortment of individuals from the broader population. This allows for richer, more relevant data to be collected, aligning closely with the objectives of the study.

The emphasis on selecting individuals based on characteristics defined by the researcher enhances the study's validity in examining the targeted aspects of interest.