Users and Uses of a Global Union Catalog: A Mixed- Methods Study of WorldCat.org Simon Wakeling and Paul Clough Information School, University of Sheffield, Regent Court, 211 Portobello, Sheffield, S1 4DP, UK. E-mail:
[email protected],
[email protected] Lynn Silipigni Connaway Research, OCLC Online Computer Library Center, Inc., 6565 Kilgour Pl, Dublin, OH 43017, USA. E-mail:
[email protected] Barbara Sen Information School, University of Sheffield, Regent Court, 211 Portobello, Sheffield, S1 4DP, UK. E-mail:
[email protected] David Tomas Department of Software and Computing Systems, University of Alicante, Apartado 99. 03080 Alicante, Spain. E-mail:
[email protected] This paper presents the first large-scale investigation of effectively connects users referred from institutional the users and uses of WorldCat.org, the world’s largest library catalogs to other libraries holding a sought item, bibliographic database and global union catalog. Using users arriving from a search engine are less likely to a mixed-methods approach involving focus group inter- connect to a library. views with 120 participants, an online survey with 2,918 responses, and an analysis of transaction logs of approximately 15 million sessions from WorldCat.org, the study provides a new understanding of the context Introduction for global union catalog use. We find that WorldCat.org Sustaining the relevance and usefulness of library services is accessed by a diverse population, with the three pri- mary user groups being librarians, students, and aca- in a networked age continues to challenge both professional demics. Use of the system is found to fall within three and research communities.