College and Research Libraries Data-Guided Collection Development: A Promise Unfulfilled Dennis P. Carrigan The widening gap between constituents' demands for materials and re- search libraries' abilities to meet those demands calls for new strategies or emphases by those libraries. It may be expected that patron demands will exert increasing influence over the allocation of materials budgets and those data on use of materials will drive or guide collection develop- ment. Are such data, which can be provided by automated systems, being used to guide collection development? Responses to a survey reveal that, with few exceptions, they are not. ., mong libraries serving the lead- ing North American research universities, there is clear evi- dence of a widening gap be- tween constituents' demands for materi- als and libraries' abilities to meet those demands from their own collections. Ac- cording to the report on the ARL/RLG In- terlibrary Loan Cost Study, interlibrary bor- rowing among ARL libraries grew by 108 percent in the ten years through 1992, or at an average annual compound rate of 7.6 percent. The increase the final year was ten percent.1 Moreover, a graph in the 1993-94 ARL Statistics portrays vividly the near- doubling of interlibrary borrowing among ARL academic libraries between 1986 and 1994 (see figure 1).2 According to the cost study, three con- verging trends explain the increase in in- terlibrary loans. These trends account for · the widening gap between constituents' demands and libraries' abilities to meet those demands. They are "more accessible and easy-to-use bibliographic tools; ... a growing universe of published items"; and "reduced buying power" for librar- ies as a result of increased acquisition costs for most research resources com- bined with constrained budgets. 3 Another graph from the ARL Statistics portrays the third of the converging trends. It reveals the disparities, during the period 1986-94, between the unit price increase for seri- als and monographs (115% and 55%, respectively), and the slower rate of in- crease in library spending for serials and, in particular, for monographs (93% and 17%, respectively). The graph also shows the consequences of these disparities, a 4 percent decline in serials purchased and a 22 percent decline in monographs pur- chased (see figure 2). The graphs depict what Nancy L. Eaton refers to as the "crisis of scholarly publish- ing," which has had severe consequences for research university library bud- gets. 4 As the director of such a library, Eaton asserts: Pleading for more money to match inflation and the fluctuations in the Dennis P. Carrigan is Assistant Director, School of Library and Information Science, University of Ken- tucky; e-mail: carrigan@ukcc.uky.edu. 429 430 College & Research Libraries September 1996 FIGURE 1 Supply and Demand in ARL Libraries, 1986-94 rou.~/1:; ;1 '1- ' I 'J'JS I l>eret!fter /\II\ fl -O- 'J II :;o 1 - Available through all library wholesalers or caiiS00-722-4726; fax 614-755-5645 For a brochure, call Rebecca Seger at 212-337-5036; e-mail rseger®mcgraw-hillcom www.books.mcgraw-hill.com