I am quite interested in the debate regarding Open Access (OA) to scientific publications. Accordingly, this week my attention was drawn to a one-page article in Science by University of Chicago researchers James Evans and Jacob Reimer titled Open Access and Global Participation in Science.
The question of how OA influences science is a popular one. In the last decade, many studies have addressed the question: are OA papers more widely disseminated, read and cited? Evans and Reimer take a new perspective and ask how the influence varies by per capita gross national income (GNI).
The results of this study show that in the developing world, the OA Effect is significantly greater than it is in first world countries. Evans and Reimer report their results in terms of percent increase in citations and say that OA leads to ~8% increase in countries with the highest GNI. As shown in the graph below, “The influence of OA was more than twice as strong in the developing world”*.

Percentage increase in citations after free online access versus GNI*
Just as journals are often judged on their Impact Factor, scientists are often judged on their H-index. Increased citation rates should motivate publishers to provide an OA option and motivate scientists to pay for such an option when available. Both groups would do well to take note of the global perspective presented in Open Access and Global Participation in Science.
*Open Access and Global Participation in Science. Evans, James A and Reimer, Jacob. 2009, Science, Vol. 323, p. 1025.


