Heterodox Nicholas Gregory Mankiw (/ˈmænkjuː/ MAN-kyoo; born February 3, 1958) is an American macroeconomist who is currently the Robert M. Beren Professor of Economics at Harvard University.

As of February 2020[update], the RePEc overall ranking based on academic publications, citations, and related metrics put him as the 45th most influential economist in the world, out of nearly 50,000 registered authors.

[7] In addition, Mankiw is the author of several best-selling textbooks, writes a popular blog,[8] and from 2007 to 2021 wrote regularly for the Sunday business section of The New York Times.

His paper "Small Menu Costs and Large Business Cycles: A Macroeconomic Model of Monopoly", which was published in the Quarterly Journal of Economics in 1985, compared a firm's private incentive to adjust prices after a shock to nominal aggregate demand with that decision's social welfare implications.

In 2002, Mankiw and Ricardo Reis proposed an alternative to the widely-used New Keynesian Phillips curve that is based on the slow diffusion of information among the population of price setters.

The model is also consistent with other observed departures of inflation expectations from full rationality, including autocorrelated forecast errors and insufficient sensitivity to recent macroeconomic news.

The paper argues that the Solow growth model, once augmented to include a role for human capital, explains reasonably well international differences in standards of living.

[36] In 1986, he coauthored a paper with Michael Whinston in microeconomic theory that showed that under imperfect competition, entry tends to be excessive in homogeneous-goods industries because entrants fail to take into account the business-stealing externality that they impose on their rivals.

The New York Times reported in 1995 that Mankiw "was offered a $1.4 million advance by Harcourt Brace in Fort Worth to write a basic economics textbook.

"[38] When the first edition of the Principles book was published in 1997, The Economist magazine stated,[39] Mr. Mankiw has produced something long overdue: an accessible introduction to modern economics.

By writing more in the style of a magazine than a stodgy textbook and explaining even complex ideas in an intuitive, concise way, he will leave few students bored or bewildered....

As chairman, Mankiw was part of a George W. Bush administration effort seeking greater oversight of two government-sponsored enterprises: Fannie Mae and Freddie Mac.

In a November 2003 speech to a conference of bank supervisors,[41] he said: The enormous size of the mortgage-backed securities market means that any problems at the GSEs matter for the financial system as a whole.

[44] In November 2006, Mankiw became an official economic adviser to Massachusetts Governor Mitt Romney's political action committee, Commonwealth PAC.

In a press conference, Mankiw spoke of the gains from free trade and noted that the outsourcing of jobs by US companies is "probably a plus for the economy in the long run.

"[53][54] This reflected mainstream economic analysis, but was criticized by many politicians,[55][56] who drew a link between outsourcing and the slow recovery of the US labor market in early 2004.

[64] On his blog, he wrote:[65] Mr. Trump has not laid out a coherent economic worldview, but one recurrent theme is hostility to a free and open system of international trade.

And then there are issues of temperament.... he does not show the admirable disposition that I saw in previous presidents and presidential candidates I have had the honor to work for.On October 28, 2019, Mankiw left the Republican Party and registered as an independent.

[71] In 2017, Mankiw was one of eight "Republican elder statesmen" to propose for conservatives embrace of a policy of carbon taxes, with all revenue rebated as lump-sum dividends.

[72][73] Mankiw is referenced in the 2011 film Elles, which shows an episode in the life of Anne (Juliette Binoche), a journalist writing an article about female student prostitution.

When asked about her classes, one of the students, the Polish immigrant Alicja (Joanna Kulig), replies that she has been studying the neoliberal economist Greg Mankiw.

[84] In addition, Mankiw is briefly mentioned in the novels Nineteen Minutes by Jodi Picoult[85] and The Female Persuasion by Meg Wolitzer.