Measuring co-movement of globalization and democratization in the time–frequency space

In the fields of political science and economics there has been a recent surge of interest in the co-movement of globalization and democratization. Wavelet coherency analysis was first used to measure the co-movement of globalization and democratization in time and frequency domains. We collected our data from the period 1948-2010. The results were as follows: (1) Co-movement is weaker for fluctuations with a duration of less than 3 years during the period from 1950-1990, with the exception of significantly positive co-movement with a duration of greater than 4 years during 1965-1975; and (2) positive long-term, mid-term, and short-term co-movement was indicated after 1990, among which positive short-term to short mid-term co-movement was the most significant. These results suggest that the Cold War influenced the interaction between democratization and globalization.