I work with a number of market research companies that look to me to recruit candidates to participate. Each study might be run by a different company and in each case, they set all of the parameters, from location, incentive amount to demographics sought. Some studies are on-going indefinitely while others have fixed dates. Please respect parameters given for a study. If you are picked for a study by being untruthful during the screener phase, you jeopardize our relationships with clients and risk being barred from future studies.