title: On the correlation between bibliometric indicators and peer review: reply to Opthof and Leydesdorff.
abstract: Opthof and Leydesdorff (Scientometrics, 2011) reanalyze data reported by Van Raan (Scientometrics 67(3):491-502, 2006) and conclude that there is no significant correlation between on the one hand average citation scores measured using the CPP/FCSm indicator and on the other hand the quality judgment of peers. We point out that Opthof and Leydesdorff draw their conclusions based on a very limited amount of data. We also criticize the statistical methodology used by Opthof and Leydesdorff. Using a larger amount of data and a more appropriate statistical methodology, we do find a significant correlation between the CPP/FCSm indicator and peer judgment.
authors.affiliation: Centre for Science and Technology Studies, Leiden University, Leiden, The Netherlands.
authors.forename: Ludo
authors.initials: L
authors.lastname: Waltman
authors.forename: Nees Jan
authors.initials: NJ
authors.lastname: van Eck
authors.forename: Thed N
authors.initials: TN
authors.lastname: van Leeuwen
authors.forename: Martijn S
authors.initials: MS
authors.lastname: Visser
authors.forename: Anthony F J
authors.initials: AF
authors.lastname: van Raan