PSClearn6 – Psychology Research Methods Practice Test

Purposive sampling means choosing participants deliberately because they have specific characteristics, experiences, or knowledge that will help answer the research question. This approach focuses on information-rich cases, making it especially useful in qualitative work or when studying rare or specialized topics where random sampling would yield many irrelevant participants. Because the selection hinges on relevance rather than representativeness, the goal isn’t to generalize to the whole population but to gain deep insight from those who can speak directly to the issue. It differs from random sampling, which gives everyone an equal chance of selection; from methods that aim for equal subgroup representation like stratified or quota sampling (which seek balance across groups rather than relevance); and from convenience sampling, which uses whoever is easiest to recruit without regard to their characteristics.