Mod 3: Microeconomics vs Macroeconomics; Positive & Normative; Birth of Macroeconomics

📖 Chapter 1 🧩 Module 3 of 11 ⏱️ ~8 min read 💡 22 MCQs

Topic Part 1 of 2

Concept

3.1 Microeconomics and macroeconomics; positive and normative

🏫 School level · NCERT Class 9–12 (the base for UPSC, BPSC, SSC and Bank exams)

One stall or the whole bazaar

Split the subject by the size of the question. Microeconomics studies individual units: a household deciding what to buy, a firm setting its price or output, the market for one good. Macroeconomics studies the totals: national income, total employment, the general price level, growth of output and the balance of payments. A rise in the price of onions in one mandi is a micro fact; a rise in the Consumer Price Index is a macro fact.

Fig 3.1 Micro and macro use different units of analysis but feed into each other (arrows).

Table 3.1 Micro and macro side by side
Basis	Microeconomics	Macroeconomics
Unit studied	Individual consumer, firm, industry	Economy as a whole (aggregates)
Central problem	Price determination and resource allocation	Determination of income, employment and price level
Other name	Price theory	Income and employment theory
Main tools	Demand and supply of one good	Aggregate demand and aggregate supply
Usual assumption	Full employment, other things equal (ceteris paribus)	Income and employment can vary
Examples	Price of tea, wage of a carpenter, output of one mill	GDP, inflation rate, unemployment rate, fiscal deficit

📘 Who named them?

The Norwegian economist Ragnar Frisch first used the terms “micro-dynamic” and “macro-dynamic” in 1933; he shared the first Nobel Memorial Prize in Economics (1969) with Jan Tinbergen. The words come from Greek mikros (small) and makros (large).

📗 Positive and normative economics (NCERT Class 11)

Positive (“what is”)	Normative (“what ought to be”)
Describes cause and effect; can be tested with data	Contains a value judgement; cannot be proved true or false
“A rise in onion prices reduces the quantity bought.”	“Elementary health care ought to be free for everyone.”
“India’s CPI inflation was higher in 2022 than in 2019.”	“The RBI should cut interest rates to help farmers.”

Signal words for normative: ought, should, must, fair, better, desirable. Robbins treated economics as a positive science; Marshall and Pigou accepted a normative role.

⚠️ Do not confuse the cuts

Micro/macro is about the size of the unit; positive/normative is about facts vs judgements; static/dynamic is about time (dynamic analysis traces change over time); closed/open is about foreign trade.
Inflation is a macro topic even though it is about prices: it is the general price level, not the price of one good.
Micro and macro are interdependent: total demand (macro) is the sum of household demands (micro), and inflation (macro) changes each firm’s costs (micro).

⭐ Key Points for Exams

Micro = individual units (price theory); macro = aggregates (income and employment theory).
Terms first used by Ragnar Frisch, 1933.
Positive = what is; normative = what ought to be.
Inflation is macro: it is the general price level.
Fallacy of composition: what holds for one may not hold for all.

📌 Quick-Fire One-Liners

Which branch studies the price of tea? Answer: Microeconomics
Greek root of macro? Answer: Makros, meaning large
“Free health care ought to be universal” is positive or normative? Answer: Normative

Topic

Questions

MCQs

Answer this question, then use Next.

Which statement is normative?

Explanation: “Ought to” is a judgement about what is desirable. The other three describe how things work. Positive economics describes “what is” and can be tested with data. Normative economics says “what ought to be” and carries a value judgement. Words such as ought, should, fair, better are signals of a normative statement.

Which of the following is a macroeconomic variable?

Explanation: The consumer price index is an aggregate price level. The other three are facts about one market or one unit. Macro variables are aggregates for the whole economy: GDP, national income, general price level (CPI, WPI), total employment, money supply, balance of payments.

Which question belongs to macroeconomics, as NCERT Class 11 draws the line?

Explanation: Total output and the price level are aggregates. The other three are single-market questions. Microeconomics studies individual markets and units (price of one good, one firm, one consumer); it is also called price theory. Macroeconomics studies aggregates (total output, employment, price level); it is also called income theory.

[SSC pattern] Microeconomics is also known as:

Micro explains how the price of a good and the reward of a factor are determined, so it is called price theory. Macro, which explains national income and employment, is called income (and employment) theory.

[SSC pattern] Macroeconomics is also called:

Macro studies how total income, output and employment are determined. Price theory, theory of the firm and consumer behaviour are parts of microeconomics.

[School] Which of the following is studied in microeconomics?

Consumer equilibrium concerns one individual, a micro unit. The other three are economy-wide aggregates studied in macroeconomics.

[School] Which statement is positive (not normative)?

A positive statement is a fact that can be checked against data. The other three contain “should”, “must” or “ought”, signalling a value judgement (normative).

[UPSC level] The “fallacy of composition” means:

It is the reason macro needs its own reasoning: one farmer gains from a bumper crop, but if all farmers have a bumper crop prices may crash and total farm income may fall. Double counting of intermediate goods is a national-income error, not this fallacy.

Question 1 of 8

One-liners

Write your answer, then submit to see the correct answer.

Which branch studies the price of tea?

Microeconomics

Greek root of macro?

Makros, meaning large

“Free health care ought to be universal” is positive or normative?

Normative

Question 1 of 3

Topic Part 1 of 2

Concept

3.2 How macroeconomics was born: the Depression, Keynes and the paradox of thrift

🏫 School level · NCERT Class 9–12 (the base for UPSC, BPSC, SSC and Bank exams)

From Say’s Law to effective demand

Until the 1930s most economists were classical (Adam Smith, David Ricardo, J. B. Say, J. S. Mill). They believed that free markets clear by themselves: prices and wages are flexible, so any unemployment is temporary, and “supply creates its own demand” (Say’s Law). The government should follow laissez-faire (let things be).

The Great Depression began with the Wall Street crash of 1929. In the USA output fell sharply and unemployment rose from about 3% to about 25% by 1933, and it stayed high for years. The classical theory could not explain such long, mass unemployment.

John Maynard Keynes published The General Theory of Employment, Interest and Money in 1936. He argued that output and employment depend on effective (aggregate) demand; demand can stay too low for long, and the government should raise it through public spending. NCERT Class 12 places the birth of macroeconomics as a separate branch here. Keynes is called the father of modern macroeconomics.

Table 3.2 Classical vs Keynesian view
Question	Classical	Keynesian
Is full employment automatic?	Yes, in the long run	No; equilibrium can occur with unemployment
What drives output?	Supply (Say’s Law)	Aggregate (effective) demand
Wages and prices	Flexible	Sticky in the short run
Role of government	Minimum (laissez-faire)	Active fiscal policy in a slump
Saving	A virtue; becomes investment through the interest rate	Too much saving can cut demand (paradox of thrift)

Fig 3.2 The paradox of thrift, a macro result that micro reasoning misses.

Worked example

A household that fears a bad year saves an extra ₹2,000 a month. Is this wise? What happens if every household does the same while investment stays unchanged?

For one household it is prudent: micro reasoning says more saving means more security.
If everyone cuts spending at once, firms sell less, cut shifts and lay off workers, so incomes fall.
In equilibrium saving = investment. With investment unchanged, total saving ends up unchanged, but at a lower income.

Prudent for one, harmful for all: the paradox of thrift.

🎯 Goals of macroeconomic policy

High and sustained economic growth (rising real GDP).
Full employment (low unemployment).
Price stability (India’s inflation target: 4% CPI with a band of 2–6%, under the RBI’s flexible inflation targeting framework).
Balance of payments equilibrium and a stable exchange rate.
Equitable distribution of income.
Tools: fiscal policy (government taxes and spending, Finance Ministry) and monetary policy (interest rates and money supply, RBI).

⭐ Key Points for Exams

Classical: Say’s Law, flexible prices, automatic full employment, laissez-faire.
Great Depression 1929–33 exposed the classical view.
Keynes, General Theory 1936: effective demand; father of modern macro.
Paradox of thrift: more saving by all can lower income.
Macro goals: growth, full employment, price stability, BoP balance, equity.

📌 Quick-Fire One-Liners

Who gave the law of markets? Answer: J. B. Say
Year of the General Theory? Answer: 1936
Which body sets India’s policy repo rate? Answer: The RBI’s Monetary Policy Committee

Topic

Questions

MCQs

Answer this question, then use Next.

The paradox of thrift says that:

Explanation: The individual act can be prudent while the collective act reduces spending, sales, and income. The idea is Keynesian. Higher saving lowers consumption, firms sell less and cut output, incomes fall, and in the end total saving may not rise at all. It is an example of the fallacy of composition: what is true for one is not true for all.

NCERT Class 12 links the emergence of macroeconomics with:

Explanation: Class 12 places the birth of macroeconomics in the 1930s, after the Great Depression, with Keynes. The Great Depression began with the 1929 Wall Street crash; in the USA unemployment rose from about 3% to about 25% (1929–33). Classical economists expected markets to restore full employment on their own. Keynes’s General Theory (1936) explained why demand could stay too low, and this founded modern macroeconomics.

[SSC pattern] “The General Theory of Employment, Interest and Money” was written by:

Keynes published it in 1936, during the Great Depression; it founded modern macroeconomics. Smith wrote The Wealth of Nations (1776), Marx wrote Das Kapital (vol. 1, 1867), and Friedman led monetarism.

[SSC pattern] “Supply creates its own demand” is known as:

J. B. Say (French classical economist) argued that producing goods generates incomes equal to their value, so general over-production is impossible. Keynes rejected it. Gresham’s Law: bad money drives out good; Engel’s Law: the share of food in spending falls as income rises.

[School] Classical economists believed that the economy normally operates at:

With flexible wages and prices, classical economists expected markets to remove unemployment automatically. Keynes showed that equilibrium can settle below full employment (under-employment equilibrium).

[Bank PO pattern] Which of the following is NOT a goal of macroeconomic policy?

Macro policy targets economy-wide goals: growth, employment, stable prices, external balance and fair distribution. The profit of one firm is a micro objective of that firm.

[RBI Grade B level] Under the paradox of thrift, if all households try to save more while planned investment stays constant, in the new equilibrium:

In the simple Keynesian model equilibrium needs S = I. If I is fixed, S must end up equal to the same I, so the attempt to save more only lowers income (through the multiplier) until saving returns to the old level.

[UPSC level] Keynes’s main remedy for a depression was to:

Keynes argued that when private demand collapses, public spending (even financed by borrowing) fills the gap and works through the multiplier. Wage cuts would reduce incomes and demand further; laissez-faire and annual budget balance are classical prescriptions.

Question 1 of 8

One-liners

Write your answer, then submit to see the correct answer.

Who gave the law of markets?

J. B. Say

Year of the General Theory?

1936

Which body sets India’s policy repo rate?

The RBI’s Monetary Policy Committee

Question 1 of 3

Topic Part 1 of 2

Concept

🎯 Competitive Level (UPSC Pre · BPSC Pre · State PSC · SSC · Bank PO · RBI Grade B): Micro, macro and the policy response

Exam map
Exam	What it asks from this module
UPSC Prelims	policy response to a recession (2021); statements on macro goals
BPSC / State PSC	Keynes and his book, classical ideas, laissez-faire
SSC (CGL, CHSL, JE) / Railways	who coined micro/macro (SSC JE 2013), other names
Bank PO / RBI Grade B	paradox of thrift, Say’s Law, fiscal vs monetary tools

🏆 Previous Year Question · UPSC Prelims 2021

UPSC CSE Prelims 2021

Which among the following steps is most likely to be taken at the time of an economic recession? (a) Cut in tax rates accompanied by increase in interest rate (b) Increase in expenditure on public projects (c) Increase in tax rates accompanied by reduction of interest rate (d) Reduction of expenditure on public projects

A recession = falling demand, output and jobs. The Keynesian cure is to raise aggregate demand.
(a) and (c) mix an expansionary step with a contractionary one, so they cancel. (d) cuts demand further.
More public spending on projects creates jobs and income directly and has a multiplier effect.

(b) Increase in expenditure on public projects

🛠️ SSC previous year · SSC JE 2013

SSC JE 2013 (General Awareness)

Who was the first economist to have coined the terms “Micro Economics” and “Macro Economics”? A. Milton Friedman B. Ragnar Frisch C. J. M. Keynes D. Paul Samuelson

Frisch used the terms in 1933, three years before Keynes’s General Theory.
Keynes founded modern macro theory but did not coin the word; Friedman is the monetarist; Samuelson wrote the textbook “Economics”.

B. Ragnar Frisch

🏛️ BPSC / State PSC pattern

Pair check

Which pair is NOT correctly matched? (a) J. M. Keynes – The General Theory (b) J. B. Say – supply creates its own demand (c) Alfred Marshall – Principles of Economics (d) T. R. Malthus – The Wealth of Nations

The Wealth of Nations (1776) is by Adam Smith. Malthus wrote An Essay on the Principle of Population (1798).

(d)

🏦 Bank PO / RBI Grade B angle

Know who uses which lever: the Government runs fiscal policy (Budget: taxes, spending, borrowing); the RBI’s Monetary Policy Committee (six members, set up in 2016) sets the policy repo rate to keep CPI inflation at 4% ± 2%. In a slump, fiscal stimulus and rate cuts both raise demand; in high inflation both are tightened.

⭐ Key Points for Exams

UPSC 2021: in a recession, raise spending on public projects.
SSC JE 2013: Ragnar Frisch coined micro and macro.
Fiscal policy = Government; monetary policy = RBI (MPC).

📌 Quick-Fire One-Liners

Laissez-faire means? Answer: Non-interference of the state

Topic

Questions

MCQs

Answer this question, then use Next.

[UPSC Pre 2021] Which among the following steps is most likely to be taken at the time of an economic recession?

In a recession the aim is to raise demand. Higher public spending does this directly and through the multiplier. Options (a) and (c) pair an expansionary measure with a contractionary one; (d) is contractionary.

[SSC JE 2013] Who was the first economist to have coined the terms “Micro Economics” and “Macro Economics”?

Ragnar Frisch of Norway used the terms in 1933. He and Jan Tinbergen received the first Nobel Memorial Prize in Economics (1969). Keynes built macro theory but did not coin the term.

[State PSC pattern] “Laissez-faire” means:

A French phrase meaning “let do / let it be”. Classical economists, following Adam Smith’s invisible hand, wanted the state to limit itself to defence, justice and some public works.

[BPSC pattern] Which pair is NOT correctly matched?

The Wealth of Nations (1776) is Adam Smith’s. Malthus wrote An Essay on the Principle of Population (1798). The other three pairs are correct.

[RBI Grade B level] In India, the inflation target under flexible inflation targeting is:

The RBI Act was amended in 2016 to set up the Monetary Policy Committee; the Government notifies the target, which has been 4% CPI (combined) inflation with a tolerance band of ±2 percentage points. Price stability is a core macro goal.

[UPSC level] Consider: 1. Micro and macro economics are interdependent. 2. Inflation is a microeconomic topic because it concerns prices. 3. Total demand in an economy is the sum of individual demands. Which are correct?

Statement 2 is wrong: inflation is a rise in the general price level, an aggregate, so it is macro. Statements 1 and 3 show the link: aggregates are built from individual units, and aggregates in turn shape individual choices.

Question 1 of 6

One-liners

Write your answer, then submit to see the correct answer.

Laissez-faire means?

Non-interference of the state

Question 1 of 1