A researcher recruited participants for a survey about experiences with unemployment through an advertisement and offered free resume reviews and job search services as incentives .The respondents were thus more likely to be motivated to search for a job, compared to nonrespondents .This problem is called
A)Volunteer bias
B)Coverage bias
C)Sampling variability
D)Sampling error

Question

Quizplus · Accepted Answer

Volunteer bias occurs when the individuals who choose to participate in a study have different characteristics from those who do not, potentially affecting the generalizability of the results. In this case, offering job search services as an incentive likely attracted participants more motivated to find employment, introducing a bias based on their volunteer status.

A Researcher Recruited Participants for a Survey About Experiences with Unemployment