I am distributing the questionnaires for my research through email and I am looking for references (preferably PhD) to back this up. I especially need information on response rate. Any suggestions please?
please follow this reference. It may be of some help.
Carlbring, P., Brunt, S., Bohman, S., Austin, D., Richards, J., Ost, L. G., & Andersson, G. (2007). Internet vs paper and pencil administration of questionnaires commonly used in panic/agoraphobia research. Computers in Human Behaviour, 23, 1421-1434.