AO: They write: “Differences in the propensity of countries to collaborate internationally can be explained partly by intellectual influence: The less developed the scientific infrastructure of a given country, the higher the tendency for inter- national coauthorshipcollaboration.We haveoutlinedfurtherreasons forthis trend: With increasing specialization of science, scientists from countries with a small scientific output have to look for collaborative partners abroad; and there is also the need for cost sharing.Nevertheless, there is a large vari- ation in the rates of international coauthorship collaboration between coun- tries, and the relationship between the size of scientific output and the rate of international collaboration is relatively weak.“
