What type of sampling involves selecting respondents based on specific criteria?

Purposive sampling is recognized for its focus on selecting individuals based on specific characteristics or criteria that align with the goals of the research. This type of sampling is particularly useful in qualitative research where the intention is to gain insights from specific groups of people who possess certain attributes or experiences relevant to the study.

In purposive sampling, researchers intentionally choose participants who they believe will provide the most relevant and valuable information, thereby ensuring that the sample is tailored to the specific research questions or hypotheses being investigated. This method contrasts with random sampling, which seeks to eliminate bias by giving all individuals an equal chance of being selected, and stratified sampling, which involves dividing a population into subgroups before sampling. Convenience sampling focuses more on ease of access to participants rather than specific criteria.

Overall, purposive sampling facilitates targeted data collection that supports the depth and relevance of findings in social work research and practice.