Author ORCID Identifier
Paravee Maneejuk: 0000-0002-3794-6161
Woraphon Yamaka: 0000-0002-0787-1437
Abstract
While numerous studies have explored the link between information and communication technologies (ICT) and income inequality, most have concentrated on average effects, neglecting the nonlinear and asymmetric mechanisms through which ICT shapes income distribution. This study investigates whether ICT simultaneously exhibits nonlinear and asymmetric effects on income disparity by applying a panel kink quantile regression to data from 71 countries spanning 1990–2021. The model identifies threshold (kink) points of ICT diffusion at which its impact on inequality changes direction, while also capturing heterogeneity across different inequality regimes. The results reveal that ICT mitigates income inequality only after surpassing critical threshold levels, and the magnitude of this effect increases along higher quantiles of the Gini distribution. Conversely, fixed-line technologies show limited or insignificant influence, underscoring their diminishing relevance in the digital era. These findings highlight that the inequality-reducing role of ICT depends on both the level of digital diffusion and the degree of existing inequality. By jointly modeling nonlinear thresholds and distributional asymmetries, this study provides new evidence on when and for whom ICT acts as an equalizer, offering policy insights for promoting inclusive ICT diffusion and sustainable economic growth.
Recommended Citation
Maneejuk, P.,
&
Yamaka, W.
(In press).
Does ICT Simultaneously have Nonlinear and Asymmetric Effects on Income Disparity?.
Information Technology for Development.
Available at:
https://aisel.aisnet.org/itd/vol32/iss3/26