5 major themes from this year's largest gathering of economists

Every January, thousands of economists from all over the world convene in one convention center to share their research on topics ranging from health epidemics to machine learning.

Yahoo Finance was on-site in San Diego for the conference and highlights, which revealed five big topics that could be game-changers for the field of economics.

Central banks have their hands tied

With interest rates as low as they are around the world, central banks are continuing to emphasize the need for governments to enact fiscal policies to stimulate economic growth.

The worry: a macroeconomic shock could back central banks against zero rates again, forcing them to use unconventional tools like quantitative easing or negative interest rates.

Former Fed Chair Janet Yellen said Sunday that with interest rates so low, fiscal policy-makers should do their part to stir economic activity.

“Even under current conditions, I think we can afford to increase federal spending or cut taxes to stimulate the economy if there is a downturn,” Yellen said. She specifically advocated for “automatic stabilizers,” which adjust fiscal policies like the income tax and welfare based on how fast or slow the economy is growing.

Former Minneapolis Fed President Narayana Kocherlakota told Yahoo Finance in an interview that Congress should be willing to spend amid low borrowing costs on U.S. government debt.

Federal Reserve Bank of Minneapolis President Narayana Kocherlakota speaks during the Federal Reserve Bank of Kansas City's annual Jackson Hole Economic Policy Symposium in Jackson Hole, Wyoming August 28, 2015. REUTERS/Jonathan Crosby
Then-Federal Reserve Bank of Minneapolis President Narayana Kocherlakota speaks during the Federal Reserve Bank of Kansas City's annual Jackson Hole Economic Policy Symposium in Jackson Hole, Wyoming August 28, 2015. REUTERS/Jonathan Crosby

“There’s such an appetite for pieces of paper with the U.S. Treasury on it, we should be taking advantage of that for our citizens,” Kocherlakota said.

San Francisco Fed President Mary Daly and Dallas Fed President Robert Kaplan said slower growth is a result of falling labor force participation, suggesting that policy changes to job retraining programs or immigration could help.

Economics suffers from a crippling lack of diversity

After a panel at last year’s economics conference focused on improving the economic profession for women, the conference organizers were challenged to cover its well-known problem with race as well.

In a sobering speech on Friday, Yellen said economics suffers from levels of diversity worse than in STEM (science, technology, engineering, and math) fields. And worse, the economics field has seen diversity decline in recent decades.

WASHINGTON, DC - NOVEMBER 29: Federal Reserve Chair Janet Yellen testifies during a Joint Economic Committee on Economy Hearing on Capitol Hill November 29, 2017 in Washington, DC. Yellen spoke about gradual interest rates increases in the future. (Photo by Zach Gibson/Getty Images)
WASHINGTON, DC - NOVEMBER 29: Federal Reserve Chair Janet Yellen testifies during a Joint Economic Committee on Economy Hearing on Capitol Hill November 29, 2017 in Washington, DC. Yellen spoke about gradual interest rates increases in the future. (Photo by Zach Gibson/Getty Images)

“Let me emphasize that our focus is not on whether there is a race problem in economics,” Yellen said. “That’s been abundantly documented. Statistics show minorities are significantly underrepresented.”

Failure to diversify the field of practicing economists risks publishing work that advances only white, male perspectives on topics and issues that people of all genders and all races have stakes in.