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Discovery or Displacement: A Large Scale Longitudinal Study of the Effects of Discovery Platforms on Online Journal Usage

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McDonald, John, Jason Price, and Michael Levine-Clark, “Discovery or Displacement: A Large Scale Longitudinal Study of the Effects of Discovery Platforms on Online Journal Usage,” Plenary. UKSG Annual Conference, Harrogate, U.K., April 16, 2014.

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Discovery or Displacement: A Large Scale Longitudinal Study of the Effects of Discovery Platforms on Online Journal Usage

  1. 1. Discovery or Displacement? A Large-Scale Longitudinal Study of the Effect of Discovery Systems on Online Journal Usage UKSG Harrogate April 16, 2014 Michael Levine-Clark, University of Denver John McDonald, University of Southern California Jason Price, SCELC Consortium http://tinyurl.com/pg686r4
  2. 2. Does implementation of a discovery service impact usage of publisher- hosted journal content?
  3. 3. Publisher-hosted journals are only part of the picture eBooks, pBooks, aggregator journal content, etc. publisher journal content The six publishers in this study
  4. 4. What did we measure? • Whether there is an effect • NOT why that effect exists (that’s a future study!)
  5. 5. Data collection • List of libraries with discovery services > Searched on lib-web-cats • Surveyed Libraries > Discovery service Implemented > Implementation Date (month/year) > Search box location > Marketing effort • 149 Libraries Gave Approval > 33 libraries selected for this phase > 6 for each of the 4 major discovery services and a group of 9 libraries with no service
  6. 6. Dataset• 33 Libraries – 28 US, 2 CA, 1 each from UK, AUS, NZ – WorldCat book holdings > Average: 1,114,193 ; Range: ~300k to ~2.6mil • Implementation dates (Discovery Libraries): > 2010 (3), 2011 (19), 2012 (2) • 6 Publishers • 9,206 Journals • 163,545 Usable Observations
  7. 7. Methodology Compared COUNTER JR1 total full text article views for the 12 months before vs 12 months after implementation date June2010Start Implementation May2011 May2012 End Year 1 Year 2 Included implementation month in Year 1 to ensure that both periods included an entire academic year
  8. 8. Observations by Publisher
  9. 9. Journals by Library & Service 5327 3262 5328 6294 4384
  10. 10. Average Usage Change By Discovery & Publisher Per Journal & Per 10,000 FTE
  11. 11. Examine Data for Outliers
  12. 12. Full Model Including Discovery Service, Publisher, and Library Including Discovery Service, Publisher, and Library
  13. 13. Testable Effects • Discovery Tool – Implemented by multiple libraries – Used to find content from all publishers • Publisher – Accessible in all discovery tools – Accessible across multiple libraries • Library – Uses content from multiple publishers – Uses only one discovery tool (so only within DT)
  14. 14. Nested ANOVA Model [all three factors – preliminary results]
  15. 15. Does usage change vary across libraries? Institution (sorted by Mean Change)
  16. 16. Does usage change vary across libraries using the same service? Library 10-15 Library 16-21 Library 22-27 Library 28-33Library 1-9
  17. 17. Does usage change vary across publishers? Publisher (sorted by Mean Change) B AAA A A
  18. 18. Does usage change vary across discovery services? A BB C D
  19. 19. Publisher Does the effect of discovery service differ across publishers?
  20. 20. Results Can we detect differences between Discovery Services, Publishers, and/or Libraries and/or their interactions? • Library – Yes • Publisher – No • Discovery Service – Yes • Differential discovery service effect by publisher – Yes
  21. 21. Next Steps • Design & test for effects of: – Aggregator full text availability – Publisher Size – Journal Subject – Overall usage trends – Configuration options in Discovery services • Expand pool of libraries • Perhaps explore WHY
  22. 22. Past Presentations • Ithaka Sustainable Scholarship Conference (October 2013) • Charleston Conference (November 2013) • ER&L/Library Journal Webinar (December 2013) • Shangai Jiao Tong Univ / Beijing Univ (Jan 2014) • SCELC Colloquium (March 2014) • ER&L (March 2014) • Presentations posted on slideshare : – http://visualcv.com/lpq4t1s – http://tinyurl.com/pg686r4 michael.levine-clark@du.edu | johndmcd@usc.edu | jason@scelc.org

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