Reexamining the Middle-Income Trap Hypothesis: What to Reject and What to Revive

Working Paper: NBER ID: w23126

Authors: Xuehui Han; Shangjin Wei

Abstract: Do middle-income countries face difficult challenges producing consistent growth? Using transition matrix analysis, we can easily reject any unconditional notion of a “middle-income trap” in the data. However, countries have different fundamentals and policies. Using a nonparametric classification technique, we search for variables that separate fast- and slow-growing countries. For middle-income countries, a relatively large working age population, sex ratio imbalance, macroeconomic stability, and financial development appear to be the key discriminatory variables. We do the same exercise for low-income countries. This framework yields conditions under which countries in the low- and middle-income ranges move forward or backward, or are trapped.

Keywords: Middle-Income Trap; Economic Growth; Transition Matrix Analysis

JEL Codes: O10; O40


Causal Claims Network Graph

Edges that are evidenced by causal inference methods are in orange, and the rest are in light blue.


Causal Claims

CauseEffect
Middle-income countries (O53)Higher probability of moving to high-income status (J62)
Demographics (J11)Growth outcomes (O40)
Growth rate of working-age cohort (J11)Growth outcomes (O40)
Sex ratio imbalance (J79)Growth outcomes (O40)
Macroeconomic stability (E60)Growth outcomes (O40)
Financial development (O16)Growth outcomes (O40)
Different clusters of fundamentals and policy choices (D71)Varying growth performances (O41)
Growth challenges faced by middle-income countries (O11)Growth challenges faced by low-income countries (F63)

Back to index