We study an economy in which firms use labor and various vintages of capital in a CES production function for the final good. We explicitly solve for the investment in capital of a given vintage as a function of its age, and for the resulting stocks of capital. We show that for reasonable parameter values, inverted-U-shaped dynamics of investment and S-shaped dynamics for capital arise in equil...

The share of manufacturing in output follows an inverted U shape over the course of development. However, both the timing and the magnitude of structural change differ substantially across countries. I show a simple open economy model of structural change can explain why countries with lower aggregate productivity industrialize more slowly and start de-industrialization at a lower share of manu...

Theoretical and empirical research suggests that job experience, organizational tenure, and age have non-linear relationships with performance. Considered simultaneously, there should exist an inverted U-shaped relationship between time and performance. This paper includes three studies — a meta-analysis, a crosssectional sample, and a longitudinal sample—to test these hypotheses. Together, the...

We set up a theoretical framework to analyse the role of economic growth and technological progress in the erosion of social capital. Under certain conditions on parameters, the relationship between technological progress and social capital can take the shape of an inverted U curve. Furthermore, we show the circumstances that allow the economy to follow trajectories where the stock of social ca...

We investigated the effect of bromocriptine, a dopamine agonist, on individual differences in behavior as well as frontal-striatal connectivity during a working memory task. After dopaminergic augmentation, frontal-striatal connectivity in low working memory capacity individuals increases, corresponding with behavioral improvement whereas decreases in connectivity in high working memory capacit...

BACKGROUND AND OBJECTIVE Bisphenol A (BPA) levels have previously been associated with coronary heart disease (CHD). Since CHD is an atherosclerotic disease, we investigated if circulating levels of BPA and phthalate metabolites are related to atherosclerosis in a cross-sectional study. METHODS In the population-based Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS) stu...

In the 1950s, a future Nobelist Simon Kuznets discovered the following phenomenon: as a country’s economy improves, inequality first grows but then decreases. In this paper, we provide a simple dynamical system-based explanation for this empirical phenomenon. 1 Kuznets Curve: A Brief Reminder and Need for an Explanation What is the Kuznets curve. In the 1950s, Simon Kuznets, an American economi...