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CAIE IGCSE Economics 2.3.3 Shifts of a supply curve

Identify the production-side cause of a supply change, shift the curve in the correct direction and trace its effect on equilibrium price and quantity in the market.

Syllabus
2027–2029
Course
Economics 0455

Exam points

  • Draw a labelled rightward supply shift after a subsidy, productivity gain or resource discovery.
  • Draw a leftward supply shift after higher input costs, taxation or a poor harvest.
  • Explain how the shift changes equilibrium price and quantity while demand is unchanged.

2.3.3—Shifts of a supply curve question 1

[Maximum number: 4]

Read the source material carefully before answering Question 1.

Source material: Gabon's industries and labour force

Source material: Gabon's industries and labour force

Gabon is a small West African country. Its rainforests reduce air pollution, provide wood for timber production, protect against floods and reduce soil erosion. The Gabonese Government wants to conserve the country's rainforests. It has created some national parks which has increased tourism, affecting the current account of the balance of payments.

The Gabonese Government wants to reduce the country's reliance on timber production, oil production and agriculture. The country is Africa's fifth-largest oil producer but its resources of oil are running out. The oil industry causes water pollution. The country has other natural resources, including gold. In 2022, new deposits of gold were found in Gabon.

Gabon's agricultural industry employs a high proportion of the country's labour force. Fig. 1.1 shows the literacy rate and the percentage of the labour force employed in agriculture in six selected countries in 2022.

Fig.1.1 The literacy rate and the percentage of the labour force employed in agriculture in selected countries in 2022

Fig.1.1 The literacy rate and the percentage of the labour force employed in agriculture in selected countries in 2022

In recent years, Gabon has experienced a high rate of unemployment among 15-24 year olds. High rates of youth unemployment can result in young people not gaining the skills and experience needed to achieve high productivity. It can also have a harmful effect on their confidence. Some governments pay private sector firms to give work experience to unemployed young people. The quality of this experience can vary.

The Gabonese Government wants to develop its textile industry, encouraging firms to grow in size. The output of the industry will be affected not only by possible government support but also by its use of technology and specialisation of workers.

Draw a demand and supply diagram to show the effect of the discovery of new gold deposits on the market for gold.

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