Based on the concept that library use measurement should have as its basic starting point the individual patron, a method of data collection and analysis has been developed that explores individual patterns of borrowing over time. The method accounts for the number of visits on which borrowing takes place, number of items borrowed per visit, and…

This annotated bibliography of materials dealing with the evaluation of library reference services is arranged by category including literature success, quality, and accuracy of answers; cost and task analysis; interviews and communication; classification of reference questions; reference collections; staff availability; use and nonuse of…

Recognizing that the proliferation of personal computers and microcomputers has made it possible for individuals to access information and library resources electronically, a user study was undertaken by an academic library to determine if these "invisible" individuals accessed information differently than more traditional library users.…

Describes a circulation model for academic research libraries which uses the mixed Poisson model, incorporating ageing of library materials, to predict future use of monographs and to suggest weeding procedures based on frequency of circulation. Longitudinal studies are examined and statistical details are appended. (Author/LRW)

Discusses issues relating to the reliability, validity, utility, and information value of unobtrusive testing of library reference services; provides suggestions for practical applications of these criteria; applies study findings to library decision making and planning; and identifies topics for further methodological refinement. (Author/CLB)