Hi, sorry for reposting this, but I realized there was a mistake in my post that makes a substantive difference. I should have said NOT simply phone-based surveys. Here's my original query in full again. Apologies for cluttering your mailboxes. -- Eszter Hi, I'm looking for some references to publications about studies that used random sampling to recruit respondents _and_ required respondents to travel to the study location (so they were not simply, say, phone-based interviews). Mine is such a study (http://www.webuse.org ) and I'm in need of some references for comparison. I know of experimental, quasi-experimental and focus group studies, but none of the ones I know of used random sampling. I would greatly appreciate any pointers. The studies don't have to be IT related as the focus here is on response rates in general and methodology. Thanks! Eszter __________________________________________________________________ Your favorite stores, helpful shopping tools and great gift ideas. Experience the convenience of buying online with Shop@Netscape! http://shopnow.netscape.com/ Get your own FREE, personal Netscape Mail account today at http://webmail.netscape.com/