You might want to look at Cliodynamics: the Journal of Quantitative History and Cultural Evolution [1] which attempts to develop scientific theories of history and sociology. Peter Turchin, one of the authors of the study described in TFA, has a brief description of the journal in his blog [2].

[1] http://escholarship.org/uc/irows_cliodynamics

[2] http://peterturchin.com/cliodynamics/