The differences between a movement along a demand curve and shift demand curve are given below:
S.N | Movement along a demand curve | Shift in demand curve |
1. | It is caused by the change in the price of the commodity only. | It is caused by the change in the factors other than price. |
2. | It is always along the same demand curve i.e. no new demand curve is drawn. | It is shown by drawing new demand curve. |
3. | The position of the demand curve remains the same. | The position of demand curve changes. |
4. | If the quantity demanded a commodity decreases with a rise in price, it is called contraction in demand. In this case, the consumers move upwards along the same demand curve. | If the demand for a commodity falls due to unfavourable change factors other than price it is called increase in demand. In this case, the demand curve shifts towards the left. |
5. | If the more quantities of a commodity are demanded with the fall in price, it is called extension in demand. In this case, the consumer moves downward along the same demand curve. | If the demand for a commodity rises due to favourable change in factors other than price, it is called an increase in demand. In this price, demand curve shifts towards right. |