A survey of professional economists in the US showed that while there wasn’t much difference in the perspective of women and men when it came to economic methodology, there were notable ones on policy. Women, for example, were 32 percentage points more likely to agree that income should be distributed more equally.

As Wood wrote in 2018, teams of people who are too similar – in terms of gender, race, age and class – perform poorly because of their narrow range of perspectives and because they are more likely to lapse into “group think” where bad ideas go unchallenged.

“Study after study has demonstrated that more diverse teams make better decisions,” she wrote.

So, what is the state of the economics profession? It’s a question that Jacqui Dwyer, head of the Reserve Bank’s information department, has probed – and it starts at high school.

First, there has been a dramatic fall in the size of the economics student population. Over the past decade, year 12 economics enrolments have been sitting about 70 per cent lower than in the early 1990s.

“Most of the fall occurred during the mid-1990s, with enrolments then drifting down before persisting at relatively low levels for the past decade,” Dwyer said. Part of this is because of the introduction of business studies in the early 1990s, which has become a substitute for economics that students see as easier to learn with clearer career prospects – and which teachers see as easier to teach.

This has, in turn, led to fewer schools offering economics as a discipline. Government schools in particular have dropped off. While almost every school in NSW across the government and non-government sectors offered economics in the 1990s, only about 30 per cent of government schools now offer the subject.

This has led to less uptake of economics by students from less advantaged backgrounds, while the share of advantaged students picking up the subject has grown.

There’s also been a stark fall in female participation. Male and female students accounted for roughly equal shares of year 12 economics enrolments in the early 1990s. Since then, female participation has fallen off: males now outnumber females, two to one.

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These numbers are crucial because they feed into the economics student populations at universities. While enrolments have grown in fields such as management and commerce, STEM and banking and finance since the 1990s, the number of economics students has flat lined.

Another factor weighing on economics enrolments at university is the perception that economics is a “riskier” subject to study with a less well-defined career path than other disciplines.

That’s despite economics graduates having among the highest average earnings (only beaten by engineering graduates) and one of the widest array of employment options, in terms of industry and occupation.

Economics students do, however, face some challenges in landing their first job out of uni. The unemployment rate of economics graduates is higher than disciplines such as health, education and business, especially just after graduation (although, as Dwyer notes, it’s a similar rate to those in science and information technology).

The fall in the number of economics students also impacts economic literacy in the broader population. This is important because those who are economically literate make more informed economic choices, better understand the world around them and can influence public discussions and government action.

They can also make public policy more effective by aligning their expectations or behaviour with its intended purpose.

Unfortunately, diversity issues continue into university. Unlike at high school, the gap between female and male participation has always existed, recently sitting at a similar ratio to what we see in high schools.

Even worse, there’s been a sharp worsening of diversity in socioeconomic status. “Economics has become a socially exclusive subject, with a higher share of students from advantaged backgrounds than is the case for most other disciplines,” Dwyer said.

More than half of university economics students are from high socioeconomic backgrounds, whereas only about 7 out of 100 were from the bottom 25 per cent.

The economics discipline is often criticised for its shortcomings: flawed predictions, incorrect assumptions and policy blunders.

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While it will always be an imprecise science, If we want to improve public policy and the questions and discussions shaping them, the state of the economics discipline must change, reflecting the diversity of the people it studies.

As Chalmers has pointed out: “numbers are very important. But the main reason we study economics is not numbers, it’s people.”

If we want economics to serve people, we need the faces at the front of that classroom, and in the classroom, to reflect a wider set of perspectives that better mirror how our economy – and its people – work. That’s step one of improving the state of the discipline.