Do Mature Economies Grow Exponentially?
Steffen Lange, Peter P\"utz, Thomas Kopp

TL;DR
This paper investigates whether mature economies truly grow exponentially by analyzing GDP per capita data from 18 countries, challenging the common assumption of exponential growth in economic models.
Contribution
It provides empirical evidence questioning the validity of exponential growth models for mature economies using time series analysis and robustness checks.
Findings
Exponential growth models may not adequately describe GDP per capita in mature economies.
Linear models sometimes fit the data better than exponential models.
Results prompt reconsideration of growth theories for developed economies.
Abstract
Most models that try to explain economic growth indicate exponential growth paths. In recent years, however, a lively discussion has emerged considering the validity of this notion. In the empirical literature dealing with drivers of economic growth, the majority of articles is based upon an implicit assumption of exponential growth. Few scholarly articles have addressed this issue so far. In order to shed light on this issue, we estimate autoregressive integrated moving average time series models based on Gross Domestic Product Per Capita data for 18 mature economies from 1960 to 2013. We compare the adequacy of linear and exponential growth models and conduct several robustness checks. Our fndings cast doubts on the widespread belief of exponential growth and suggest a deeper discussion on alternative economic grow theories.
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Taxonomy
TopicsEconomic Growth and Productivity
