There is a more general worry that the grouping of disparate giants known as the BRIC nations — Brazil, Russia, India and China — has, for some reason, lost much of its previous momentum. Last year Brazil grew at only a 2.7 percent rate, down from 7.5 percent, and Chinese and Russian G.D.P. growth are slowing too, to an unknown extent and duration. In the past, many countries engaged in catch-up growth have suddenly slowed and hit plateaus, although economists do not have firmly established theories as to when and why this happened. In any case it remains a real danger.See also Evan Soltas' analysis here.
May 5, 2012
A historical pespecive from a new paper by de Vries et al. (Feb., 2012):