A researcher who interviews psychopaths who have murdered at least five people is using what type of sampling technique?

Question

Quizplus · Accepted Answer

The researcher is using extreme case sampling as they are targeting a very specific and extreme subset of the population (psychopaths who have committed at least five murders). This type of sampling is often used in research that aims to study rare or extreme phenomena.

A Researcher Who Interviews Psychopaths Who Have Murdered at Least