Does Income Inequality Move Together Across the World?

9 Pages Posted: 23 Sep 2022

See all articles by Joonhong Ahn

Joonhong Ahn


Ingul Baek

Kongju National University

Sanha Noh

Jeonbuk National University

Date Written: September 3, 2022


This study investigates on relative importance of the synchronization of income inequality, measured by Gini coefficient, using a dynamic factor model. We find that the global factors are relatively stable while the regional factors have heterogeneous effects on income inequality fluctuation. Also, the regional factors account more significantly for the future variance of income inequality than the global factors, which is the evidence of convergence within each continent.

Keywords: Income inequality, Dynamic factor model, Globalization

JEL Classification: D63, F20, F62

Suggested Citation

Ahn, Joonhong and BAEK, INGUL and Noh, Sanha, Does Income Inequality Move Together Across the World? (September 3, 2022). Available at SSRN: or

Joonhong Ahn


INGUL BAEK (Contact Author)

Kongju National University ( email )

Korea, Republic of (South Korea)

Sanha Noh

Jeonbuk National University ( email )

567 Baekje-daero, Geumam 1(il)-dong
Korea, Republic of (South Korea)

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