How better screening improves user research
A Good Research Participant Is Not Just Available
The fastest way to damage a user research study is to treat recruitment as a calendar problem. If someone can attend Tuesday at 3, that does not mean they can answer the questions your study is actually asking.
Screen for the decision, not the demographic label A useful screener should connect directly to the product decision. If we are studying how people manage a city service, “lives in an urban area” is a weak substitute for asking whether they have completed that task recently, how they did it, and what made it difficult.
This is where participant screening aligned with study requirements matters. The basic principle is covered well in [participant screening guidance].
The uncomfortable part Tighter criteria usually mean a smaller pool, a longer recruitment window, or a higher incentive. Those are real costs. But recruiting broadly and hoping the interviews somehow become relevant is also expensive, just less visible. Researchers pay for it in muddled findings and decisions built on the wrong experience.
I also want screeners to be honest about what they are for. They should establish fit, not coax people into the answer the team wants. If the study needs recent experience with a specific service, ask about that plainly. Do not disguise the requirement as a personality quiz.