PHYSICAL CAPITAL, HUMAN CAPITAL, AND THE HEALTH EFFECTS OF POLLUTION IN AN OLG MODEL

Sichao Wei and David Aadland

Macroeconomic Dynamics, 2022, vol. 26, issue 6, 1522-1563

Abstract: In a standard overlapping generations model, we show how the health effects of pollution impact the balanced-growth path (BGP) and the transition dynamics of the economy. The key driver is the differential between physical and human capital accumulation. The differential occurs because pollution alters the incentives to save and to invest in education via reductions in longevity and alters the effectiveness of education expenditures via impaired cognitive learning. Two predictions of the model are noteworthy. The first prediction is the existence of two stable BGPs with a separating saddle path. One BGP is desirable featuring high economic growth and low pollution, whereas the other should be avoided because it is associated with low economic growth and high pollution. The second prediction is that economic and environmental cycles may emerge, implying inequality between generations. These theoretical results are supported by empirical evidence and imply a role for government to steer the economy toward the desirable BGP and eliminate the cycles.

Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:cup:macdyn:v:26:y:2022:i:6:p:1522-1563_4

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