7 Aug 2017

Don’t listen to the rich: inequality is bad for everyone

Inequality is bad for everyone

Author
Chris Doucouliagos

Professor of Economics, Department of Economics, Deakin Business School and Alfred Deakin Institute for Citizenship and Globalisation, Deakin University
Disclosure statement

One of the co-authors of the cited research, Jakob B. Madsen, received financial support from the Australian Research Council (DP150100061 and DP170100339).
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Having only a few people with most of the wealth, motivates others. This theory is actually wrong according to research. 

A world where a few people have most of the wealth motivates others who are poor to strive to earn more. And when they do, they’ll invest in businesses and other areas of the economy. That’s the argument for inequality. But it’s wrong.

Our study of 21 OECD countries over more than a 100 years shows income inequality actually restricts people from earning more, educating themselves and becoming entrepreneurs. That flows on to businesses who in turn invest less in things like plant and equipment.

Inequality makes it harder for economies to benefit from innovation. However, if people have access to credit or the money to move up, it can offset this effect.

We measured the impact of this by looking at the number of patents for new inventions and then also looking at the Gini coefficient and the income share of the top 10%. The Gini coefficient is a measure of the distribution of income or wealth within a nation.
How inequality reduces innovation

From 1870 to 1977, inequality measured by the Gini coefficient fell by about 40%. During this time people actually got more innovative and productivity increased, incomes also increased.
But inequality has increased in recent decades and it’s having the opposite effect.

Inequality is preventing people with less income and wealth from reaching their potential in terms of education and invention. There’s also less entrepreneurship.

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