Purposive sampling is a non-probability sampling technique where researchers select participants based on specific characteristics or criteria relevant to the study. This method allows researchers to focus on a particular group that possesses the qualities needed to provide valuable insights into the research question. This approach is often used in qualitative research, such as interviews or focus groups, where understanding the experiences or perspectives of a specific population is essential. By intentionally choosing participants, researchers can gather rich, detailed information that may not be obtainable through random sampling methods.