The authors theory explains how increases in R&D intensity and educational attainment can be equilibrium responses to changing conditions that make growth more difficult.
Link
http://econpapers.repec.org/scripts/redir.pl?u=http%3A%2F%2Fwww.fiu.edu%2F~pinteam%2Fpleasantarithmetic.pdf;h=repec:sce:scecf5:185