OCR A Level Economics: Thinking synoptically: micro and macro in an unseen theme (H460) – Revision Notes

These notes condense Component 03, Themes in economics, of the OCR A Level Economics (H460) specification, Version 3.0 (June 2026), for first assessment in 2021. There is no prescribed content for this component, so the notes cover the method, the links and the skills. Full explanations are in the study guide; test yourself with the practice questions. Other pages: the OCR Economics hub, the printable checklist, the free diagnostics and the exam preparation page. All countries and figures here are invented.

The component in one table

Fact	Detail
Name and status	Themes in economics; entirely synoptic
Content	None prescribed; draws on micro and macro, applied to a specific unseen theme
Paper	2 hours, 80 marks, one third of the A level
Multiple choice	30 questions drawn from across micro and macro, mainly AO1 and AO2, some AO3 and AO4
Theme questions	Short answer and extended response, 50 marks; short answers up to 4 marks, extended 8 to 25
Timing advice	40 to 45 minutes on multiple choice; 15 to 20 minutes on stimulus; about 60 minutes for the 50 marks
Quantitative skills	At least 20% of overall marks, across three components
Series	Once a year, May/June

The four objectives

Objective	Means	Weight in this component
AO1	Knowledge of terms, concepts, theories and models	9% of the qualification
AO2	Applying knowledge to contexts	9%
AO3	Analysing issues and their impact on agents	8.33%
AO4	Evaluating arguments with qualitative and quantitative evidence	7%

“Think as economists” in the specification means using models to explain behaviour, making causal connections, and recognising the limits of those models.

Method in six steps

1. Setting: market, country, time frame.
2. Actors and what each wants.
3. The shock or change.
4. Evidence: calculate, then label each figure micro or macro.
5. Choose two or three models that fit the evidence.
6. Chain from cause to effect, then judge against a stated criterion.

Link bank

Starting point	Micro effect	Macro effect
Rise in imported input prices	Higher costs, lower supply and profit	Cost-push pressure, SRAS shifts left, price level up, output down
Rise in consumers’ incomes	Demand for normal goods rises; shift depends on income elasticity	Consumption and aggregate demand up
Tax on a good with a negative externality	Supply shifts left, price up, output down, towards the social optimum	Price level and tax revenue change; the burden may fall on low earners
Rise in interest rates	Dearer borrowing for firms and households, less demand for credit-financed goods	Investment and consumption fall, so AD shifts left
Supply-side reform raising productivity	Lower unit costs and competition in markets	LRAS shifts right, lower inflation and more growth
Higher exchange rate	Imports cheaper, exports dearer for firms	Net exports fall, AD shifts left

Each row works in both directions, so check it from the other end.

A worked theme: a rise in the price of imported energy in Country B

Energy prices rise by 40%. A firm uses energy as 15% of its total costs of 1,000 (energy 150, other costs 850). Its price elasticity of demand for energy is -0.2 in the short run.

Fall in energy used     = -0.2 x 40%   = -8%
Spending on energy      = 1.40 x 0.92  = 1.288 of the old amount (+28.8%)
New energy bill         = 150 x 1.288  = 193.2
New total costs         = 193.2 + 850  = 1,043.2
Rise in total costs     = 43.2 / 1,000 = 4.32%

Micro: inelastic demand for an input means firms cannot adjust quickly, so spending rises. The cost rise is 4.32%, less than the 28.8% rise in the energy bill, because energy is only 15% of costs. Macro: when many firms face the same shock, short-run aggregate supply shifts left. Prices rise and output falls: stagflationary pressure. Evaluation: the effect depends on the share of energy in costs, whether it is temporary, how fast firms can switch inputs, and the strength of spare capacity.

Quantitative toolkit

Skill	Formula or rule	Reminder
Percentage change	(new - old) / old x 100	Divide by the old value
Percentage points	new rate - old rate	A rate rising from 5% to 6% is 1 point and 20%
Mean, median	Mean = total / number; median = middle value	Outliers move the mean, not the median
Index number	value / base value x 100	Base year is 100
Money to real	nominal / price index x 100	Use the same base year
Price elasticity of demand	%change quantity demanded / %change price	Sign is negative for normal demand curves; compare the size with 1
Income elasticity	%change quantity / %change income	Positive for normal goods, negative for inferior goods
Multiplier	1 / MPW (1 / (1 - MPC) if saving is the only withdrawal)	Change in income = injection x multiplier
Revenue and profit	TR = P x Q; AR = TR / Q; profit = TR - TC	Average profit = AR - AC
Ratios	Share = part / whole	Express as a fraction, ratio or percentage

Multiple-choice and extended-response reminders

• Answer a numerical multiple-choice question before looking at the options.
• Real versus nominal, points versus percentages, and “falls by less” are common traps.
• In extended answers, name the concept, apply it with the theme’s evidence, link it across micro and macro, then qualify it.
• Evaluate through time (short run, long run), scale (small or large change), stakeholders and trade-offs.
• Finish with a judgement and the factor that would change it.

Worked reminder: real pay

A small economy has a price index of 100 in year 1 and 106 in year 2, and average monthly pay of cu 2,000 rising to cu 2,120.

Pay growth       = 120 / 2,000 x 100      = 6.0%
Real pay year 2  = 2,120 / 106 x 100      = cu 2,000
Real pay growth  = 0%

Pay rose in money terms but bought nothing extra. At macro level this limits consumption growth; at micro level it limits the quantity of normal goods a household buys.

Must-know distinctions

• Movement along versus shift of a curve: a price change moves along; a change in income or costs shifts.
• Nominal versus real: only real values compare purchasing power across years.
• Short-run versus long-run aggregate supply: a cost shock shifts SRAS; productivity gains shift LRAS.
• Elastic versus inelastic: the size of the PED above or below 1 decides what happens to revenue.
• Injection versus withdrawal: the multiplier depends on the size of withdrawals.

Quick self-test

1. How many multiple-choice questions are in Component 03?
2. Nominal pay is cu 5,400 and the price index is 108. Find real pay in base-year prices.
3. Price rises 8% and quantity demanded falls 12%. Find PED and describe it.
4. Withdrawals total 0.25 of each extra unit of income. Find the multiplier.
5. An index rises from 125 to 140. Find the percentage change.
6. A firm sells 400 units at AR cu 7.50 with average total cost cu 6.90. Find profit.
7. Find the mean and median of 4, 6, 6 and 12.
8. Which assessment objective is shown by judging which of two policies is better and justifying it?
9. GDP rises from 800 to 824. Find the growth rate.
10. Income elasticity of demand is +1.4 and income rises by 5%. Find the percentage change in quantity demanded.
11. State two features that a link between micro and macro should contain.

Answers

2. 5,400 / 108 x 100 = cu 5,000.
3. -12 / 8 = -1.5, which is price elastic (size above 1).
4. 1 / 0.25 = 4.
5. (140 - 125) / 125 x 100 = 12%.
6. Profit = 400 x (7.50 - 6.90) = cu 240.
7. Mean = 28 / 4 = 7; median = (6 + 6) / 2 = 6.
8. AO4 (evaluation).
9. 24 / 800 x 100 = 3%.
10. 1.4 x 5 = 7% rise.
11. It should name the mechanism in stages (cause, then effect, then consequence) and cross from one level of the economy to the other, for example from a market to the price level.

Where marks are usually lost

• Stating a definition without applying it to the stimulus.
• Giving a long list of effects with no ordering or priority.
• Mixing up the direction of a shift, for example drawing a cost rise as a rightward shift of supply.
• Calculating with the wrong base value, such as dividing by the new value.
• Giving an answer in points when the question asks for a percentage.
• Writing “it depends” without saying on what, or without a final judgement.
• Treating a short-run result as permanent, such as a temporary cost shock as a lasting change in capacity.
• Using only micro or only macro when the question asks for both.
• Leaving a diagram uncommented or with unlabelled axes.

Official syllabus

OCR, A Level Economics (H460), Version 3.0 (June 2026), for first assessment in 2021: sections 2c, 3a, 3b, 3f and the Quantitative Skills annex.