non-anonymous data: data that, by virtue of the method of collection or nature of the information, can be connected at some point, no matter how brief, to the person providing them. This includes questionnaires that the researcher collects personally from a group of subjects (unless a ballot box or envelopes are used). It also may include cases where the researcher is familiar with the handwriting of one or more of his or her subjects.  In these cases it is possible for the researcher to match the data with a specific respondent if he or she so desired.