This document discusses using qualifiers in surveys to target the ideal participants. It recommends: 1) Knowing your target audience and confirming you have the right participants through qualifying questions at the start of the survey. 2) Using qualifying questions to narrow the field to only those who can provide relevant responses. These may include releases, waivers or agreements to participate. 3) With survey tools like SoGoSurvey, it is easy to set up qualifying questions and branching logic to filter participants and guide only relevant respondents through the full survey.