All, I'm quickly approaching the end of my doctoral coursework and I am actively working towards my dissertation. As part of my literature review leading into my methodology, I'm poking around to see if there are instruments already developed that address my topic or if I need to develop one. I'm interested in how current and previous computer ownership and access ("digital divide" and "participation gap" concepts) may influence people to not respond to online surveys (i.e. non-response bias). To look at this, I have to quantitatively operationalize the concepts of ownership and access. Moreover, I have to operationalize those concepts in a retrospective manner (e.g. not just "Do you currently own a computer" but "In the last __ years, have you always owned a computer?"). There are quite a few surveys that look at current ownership and access but I have not yet found any that examine these issues in a retrospective manner. My primary goal at this point is to identify existing survey instruments or items that I might be able to use or adapt. If you know of any such instruments or research efforts that might be using or developing such instruments, could you please point me in the right direction? Of course, I welcome other sage advice and guidance you are willing to share! Thanks so much for your time! Kevin Guidry PhD student, Higher Education and Student Affairs Indiana University Bloomington