hoschke118 said:
ok thanks, that helped. So we are just meant to accept that export income will decrease (short run) due to other factors, such as the ones mentioned so far, not really explained in the book.?
stupid tim riley.
thanks guys
Ah see now you talk about two different things
Export prices is not the same as export incomes. Export prices is simply the price, whereas incomes refers to the revenues. What Riley appears to be referring to is the J curve effect.
The J curve is a graphical representation of delayed passthrough. In other words, markets dont work instantaneously but are rather delayed. There are several factors that can cause such delays, specifically contractual arrangements can be pre-written which means they are not responsive to depreciations. Alternatively it can simply take time for foreign markets to take up the cheaper produce.
The J curve simply demonstrates that ordinarily we would expect a depreciation to increase the volume of exports (as they are now cheaper to purchase). But in reality due to the aforementioned delays, the volume of exports does not change initially. So in the short run export revenues would fall. But eventually contracts would reflect the improvement in prices and higher volumes would be purchased. This would increase export revenue in the long run (but even this is an assumption as it depends on the elasticity of demand).
Consider the following example
Trade is between Australia (AUD) and the USA (USD).
Original trade revenue is 100 USD
Then there is a depreciation of 50%. Australian exporters continue to charge the same price (AUD) which is effectively a fall in price (USD) for the importer. HOWEVER trade volumes do not change because contracts are already signed and sealed.
New trade revenue is 50 USD
Over time as new contracts are signed, higher volumes are purchased due to the cheaper price. Subsequently trade volume quadruples (the extent of this effect depends on the price elasticity of demand).
New trade revenue is 200 USD
Now think of those three numbers as it would appear on a graph over time.
Notice that it looks like the letter 'J'
Hence it is called the J-curve. Notice how the J indicates that exports are inelastic in the short run, and elastic in the long run? Whilst it will almost always be inelastic in the short run, it may not necessaily be elastic in the long run either. It could be that revenues fall from the original level, but there should be some recovery of revenues and graphically there would be a minima.