Abstract:
Some academic libraries no longer assign subject headings to bibliographic records for dissertations, but have not evaluated the impact this might have on dissertation usage. In this study, bibliographic and circulation records for a sample of 248 academic dissertations were examined to determine the effect of controlled subject headings in the records on circulation of the items. Titles with Library of Congress subject headings were compared to those without. Chi-square analysis showed significant differences in circulation for the total sample (p=.04), but not for individual areas of study. Discussion of sources of bias and suggestions for future research are included.