Four measures of the scientific impact of individual researchers from 2003 to 2007, expressed as functions of the logarithm of each researcher's NSERC Discovery grant (i.e. operating grant received from the Natural Sciences and Engineering Research Council of Canada) (left column), or the NSERC grant plus the researcher's grant from the Canadian Institutes for Health Research (CIHR), if any, in 2002 to 2006.
The measures of scientific impact are: the total numbers of papers published, numbers of citations to those publications by 2012, the number of citations received by the most highly cited paper, and the number of very highly cited papers. The solid lines represent LOWESS (model-free) fits to the data. Dashed lines show linear regression fits to the log-transformed data. Dotted lines show a slope of 1.0. Symbols distinguish researchers who held only an NSERC grant, versus those who also held a grant from CIHR, CFI (the Canadian Foundation for Innovation) and/or the Fonds Québécois de Recherche – Nature et Technologies (FQRNT). Results are shown for scientists funded by the NSERC grant selection committee in Integrative Animal Biology. In all cases, individual impact increases with funding with a slope ≤1.0. Thus, impact is a decelerating function of grant size. Researchers who held grants other than NSERC are not significantly more productive than those who did not.