How do you keep undesirable respondents from sneaking into your studies? Just turn Fieldwork loose. We’ve been putting the bite on professional respondents for years. We track all respondents and cross-check by name and phone number. We make all screeners virtually guess-proof, train our recruiters to sniff out guessers, and fearlessly terminate frequent participators. We also require photo IDs at check-ins, never take unsolicited calls from respondents, and are fiercely loyal to a policy of “Don’t call us, we’ll call you.” Meanwhile, we’re tireless in fetching fresh, new respondents for our databases. It all means one thing: For better research, your best friend is Fieldwork.