A researcher has developed a new mathematics program and wants to study how it is implemented. She is particularly interested in how those most resistant to change will use the program. Hence, she selects two teachers who are known to have very little interest in changing their mathematics teaching. In this case, the researcher has used:
A) Negative-case sampling
B) Opportunistic sampling
C) Typical-case sampling
D) Critical-case sampling

Question

Quizplus · Accepted Answer

Critical-case sampling is a type of purposive sampling in which the researcher selects cases that are extreme or unusual in some way. In this case, the researcher has selected two teachers who are known to have very little interest in changing their mathematics teaching. This is an example of critical-case sampling because the researcher is interested in studying how those most resistant to change will use the program.

A Researcher Has Developed a New Mathematics Program and Wants