Identifying age, cohort and period effects in scientific research productivity
Subtitle: discussion and illustration using simulated and actual data on French physicists
By: Bronwyn H. Hall, Jacques Mairesse, Laure Turner.
Contributors: Mairesse, Jacques.; Turner, Laure.; National Bureau of Economic Research.
Series: NBER working paper series ;; working paper 11739; Working paper series (National Bureau of Economic Research : Online) ;; working paper no. 11739.
Publisher: National Bureau of Economic Research
Published: 2005
Place of publication: Cambridge, MA
Language: eng
Format: Electronic resource
Subjects: Cohort analysis -- Methodology.; Technological innovations -- Research -- Methodology.; Physicists -- France.
Description: "The identification of age, cohort (vintage), and period (year) effects in a panel of individuals or other units is an old problem in the social sciences, but one that has not been much studied in the context of measuring researcher productivity.  In the context of a semi-parametric model of productivity where these effects are assumed to enter in an additive manner, we present the conditions necessary to identify and test for the presence of the three effects.  In particular we show that failure to specify precisely the conditions under which such a model is identified can lead to misleading conclusions about the productivity-age relationship.  We illustrate our methods using data on the publications 1986-1997 by 465 French condensed matter physicists who were born between 1936 and 1960"--National Bureau of Economic Research web site.
Notes: Includes bibliographical references.
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