1. Rob van der Bliek Mark Robertson
Research Indicators
Rob van der Bliek
Mark Robertson

2. Sources of Citation Data
ISI Products
Web of Science (ISI)
Journal Citation Reports (ISI)
Other Products
Google Scholar
Google Books
Publish or Perish (Herzing)
Scopus

3. 3 Kinds of Citation Data Articles Citation Impact Authors
h-index & g-index
Journals
Journal Impact Factor

4. Kinds of Citation Data
Counting Articles
Times Cited

5. Kinds of Citation Data Author Impact
Average number of citations/article
h-index:
a scholar with an index of h has published h papers with at least h citations each
H-index
Proposed in 2005 by Jorge E. Hirsch
Intended to measure:
Quality
Sustainability of research output
Average article impact (ISI) corrects for quantity
Quantity x Quality
Corrects for one-hit wonder phenomenon and for scholars with lots of low or no impact publications
G-index attempts to correct for fact that H index ignores additional citations once a journal article counts in the h-index

6. Kinds of Citation Data Journal Quality
Impact Factor: The average number of times published papers are cited in the two calendar years following publication

7. The problem of research indicators
Disciplinary publication patterns
Time lag in publication cycle
Greater science coverage in ISI
Bias towards citation in journals in ISI
Geographic and linguistic bias
Matthew effect

8. Psychiatry journals

9. Developmental Psychology journals

10. Example problem Challenges No ISI data
No journal impact factor available
Only Google Scholar data available

11. Solutions? Google Scholar H-index and G-index Download usage data
Helps address limited coverage of ISI
Helps track impact wider economic or social impact beyond academic publications
H-index and G-index
H-index and G-index help correct differences in publication cycle time lag that may be characteristic of different disciplines
Download usage data
Helps track impact beyond scholarly citation
Helps track local as opposed to global impact