Macroeconomics – An Introduction


The kind of questions that make us think about the health of the country’s economy as a whole constitutes the basic questions of the study of macroeconomics. For example –

  • Will the prices as a whole rise or come down?
  • Is the employment condition of the country as a whole, or of some sectors of the economy, getting better or is it worsening?
  • What would be reasonable indicators to show that the economy is better or worse?
  • What steps, if any, can the State take, or the people ask for, in order to improve the state of the economy?

If we observe the economy of a country as a whole it will appear that the output levels of all the goods and services in the economy have a tendency to move together –

  • If output of food grain is experiencing a growth, it is generally accompanied by a rise in the output level of industrial goods. Within the category of industrial goods also output of different kinds of goods tend to rise or fall simultaneously.
  • Similarly, prices of different goods and services generally have a tendency to rise or fall simultaneously.
  • On the same lines, we can also observe that the employment level in different production units also goes up or down together.

If aggregate output level, price level, or employment level, in the different production units of an economy, bear close relationship to each other than the task of analysing the entire economy becomes relatively easy. Instead of dealing with the above mentioned variables at individual (disaggregated) levels, we can think of a single good as the representative of all the goods and services produced within the economy.

  • This representative good will have a level of production which will correspond to the average production level of all the goods and services.
  • Similarly, the price or employment level of this representative good will reflect the general price and employment level of the economy.

Positives of simplification

In macroeconomics we usually simplify the analysis of how the country’s total production and the level of employment are related to attributes (called ‘variables’) like prices, rate of interest, wage rates, profits and so on, by focusing on a single imaginary commodity and what happens to it.

  • We are able to afford this simplification and thus we usefully abstain from studying what happens to the many real commodities that actually are bought and sold in the market because we generally see that what happens to the prices, interests, wages and profits etc. for one commodity more or less also happens for the others.
    Particularly, when these attributes start changing fast, like when –

    • prices are going up (in what is called an inflation), or
    • employment and production levels are going down (heading for a depression),

    the general directions of the movements of these variables for all the individual commodities are usually of the same kind as are seen for the aggregates for the economy as a whole.

  • Sometimes, we also depart from this useful simplification when we realise that the country’s economy as a whole may best be seen as composed of distinct sectors. For certain purposes –
    • the interdependence of (or even rivalry between) two sectors of the economy (agriculture and industry, for example) or
    • the relationships between sectors (like the household sector, the business sector and government in a democratic setup)

    help us understand some things happening to the country’s economy much better, than by only looking at the economy as a whole.

Negatives of simplification

While moving away from different goods and focusing on a representative good may be convenient, in the process, we may be overlooking some vital distinctive characteristics of individual goods. For example production conditions of agricultural and industrial commodities are of a different nature.

Or, if we treat a single category of labour as a representative of all kinds of labours, we may be unable to distinguish the labour of the manager of a firm from the labour of the accountant of the firm.

So, in many cases, instead of a single representative category of good (or labour, or production technology), we may take a handful of different kinds of goods. For example, three general kinds of commodities may be taken as a representative of all commodities being produced within the economy: agricultural goods, industrial goods and services. These goods may have different production technology and different prices.

Macroeconomics also tries to analyse how the individual output levels, prices, and employment levels of these different goods gets determined.

Macroeconomics vs Microeconomics

In microeconomics, we come across individual ‘economic agents’ and the nature of the motivations that drive them. They were ‘micro’ (meaning ‘small’) agents – consumers choosing their respective optimum combinations of goods to buy, given their tastes and incomes; and producers trying to make maximum profit out of producing their goods keeping their costs as low as possible and selling at a price as high as they could get in the markets.

Economic Agents

By economic units or economic agents, we mean those individuals or institutions which take economic decisions. They can be consumers who decide what and how much to consume. They may be producers of goods and services who decide what and how much to produce. They may be entities like the government, corporation, banks which also take different economic decisions like how much to spend, what interest rate to charge on the credits, how much to tax, etc.

In other words, microeconomics is a study of individual markets of demand and supply and the ‘players’, or the decision makers, were also individuals (buyers or sellers, even companies) who were seen as trying to maximise their profits (as producers or sellers) and their personal satisfaction or welfare levels (as consumers).
Even a large company was ‘micro’ in the sense that it had to act in the interest of its own shareholders which was not necessarily the interest of the country as a whole.

For microeconomics the ‘macro’ (meaning ‘large’) phenomena affecting the economy as a whole, like inflation or unemployment, were either not mentioned or were taken as given.

  • These are not variables that individual buyers or sellers could change.
  • The nearest that microeconomics get to macroeconomics is when it looks at General Equilibrium, meaning the equilibrium of supply and demand in each market in the economy.

Macroeconomics tries to address situations facing the economy as a whole. Adam Smith, the founding father of modern economics, had suggested that if the buyers and sellers in each market take their decisions following only their own self-interest, economists will not need to think of the wealth and welfare of the country as a whole separately. But economists gradually discovered that they had to look further.

  • Economists found that first, in some cases, the markets did not or could not exist.
  • Secondly, in some other cases, the markets existed but failed to produce equilibrium of demand and supply.
  • Thirdly, and most importantly, in a large number of situations society (or the State, or the people as a whole) had decided to pursue certain important social goals unselfishly (in areas like employment, administration, defence, education and health) for which some of the aggregate effects of the microeconomic decisions made by the individual economic agents needed to be modified.

For these purposes macro-economists had to study the effects in the markets of taxation and other budgetary policies, and policies for bringing about changes in money supply, the rate of interest, wages, employment, and output.

Macroeconomics has, therefore, deep roots in microeconomics because –

  • it has to study the aggregate effects of the forces of demand and supply in the markets;
  • additionally, it has to deal with policies aimed at also modifying these forces, if necessary, to follow choices made by society outside the markets.
    • In a developing country like India such choices have to be made –
      • to remove or reduce unemployment,
      • to improve access to education and primary health care for all,
      • to provide for good administration,
      • to provide sufficiently for the defence of the country and so on.

Who are the macroeconomic decision makers (or ‘players’)? Macroeconomic policies are pursued by the State itself or statutory bodies like the Reserve Bank of India (RBI), Securities and Exchange Board of India (SEBI) and similar institutions. Typically, each such body will have one or more public goals to pursue as defined by law or the Constitution of India itself. These goals are not those of individual economic agents maximizing their private profit or welfare. Thus the macroeconomic agents are basically different from the individual decision-makers.

What do the macroeconomic decision-makers try to do? They often have to go beyond economic objectives and try to direct the deployment of economic resources for the public needs. Such activities are not aimed at serving individual self-interests. They are pursued for the welfare of the country and its people as a whole.

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Bibliography : NCERT – Introductory Macroeconomics

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