Research Indicators Rob van der Bliek Mark Robertson
Research Indicators Rob van der Bliek Mark Robertson
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 Kinds of Citation Data Articles • Citation Impact Authors • h-index & g-index Journals • Journal Impact Factor
Kinds of Citation Data Counting Articles Times Cited
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
Kinds of Citation Data Journal Quality Impact Factor: The average number of times published papers are cited in the two calendar years following publication
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
Psychiatry journals
Developmental Psychology journals
Example problem Challenges • No ISI data • No journal impact factor available • Only Google Scholar data available
Solutions? • Google Scholar • Helps address limited coverage of ISI • Helps track impact wider economic or social impact beyond academic publications • 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
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