Higher education administrators often wonder if the information they receive from the low response rates to surveys of non-matriculating applicants accurately reflects the entire population of these non-matriculants. These questions are exacerbated by evidence that response bias does exist. This paper describes how St. Mary's College in Notre Dame, Indiana, studied its response bias through mail and phone follow-up surveys. Results are reported from: (1) two mailed surveys, one sent to all accepted applicants who notified the institution of their intent to attend elsewhere and another shorter version (postcard) mailed to those who had not responded to the first survey; and (2) a final telephone follow-up to all remaining non-respondents. Findings from these efforts showed few differences between those who responded to the initial survey and those contacted in the subsequent surveys. It was concluded that there is no need to adjust for non-respondent bias in future surveys. The cost effectiveness of telephone follow-up, particularly when coupled with its high response rate, suggests that future surveys of non-respondents should utilize this method exclusively, rather than the postcard survey. (GLR)