Information Frictions and the Law of One Price: “When the States and the Kingdom became United”

I use a newly collected data set based on historical newspaper records that provides daily data on information flows across the Atlantic together with detailed, daily information on prices and trade flows of cotton. Information frictions result in large and volatile deviations from the Law of One Price. What is more, the elimination of information frictions has real effects: Exports respond to information about foreign demand shocks. Average trade flows increase after the telegraph and become more volatile, providing a more efficient response to demand shocks. I build a model of international trade that can explain the empirical evidence. In the model, exporters use the latest news about a foreign market to forecast expected selling prices when their exports arrive at the destination. Their forecast error is smaller and less volatile the more recent the available information. I estimate the welfare gains from information transmission through the telegraph to be roughly equivalent to those from abolishing a 6% ad valorem tariff.

 

N°: ERSD-2014-12

Autore: Claudia Steinwender, London School of Economics and Political Science

Fecha de redacción: mayo de 2014

Palabras clave:

 

Código JEL:

 

volver al principio

Declinación de responsabilidad 

Este es un documento de trabajo y se refiere, por consiguiente, a un estudio en curso. Refleja las opiniones de sus autores. No pretende reflejar la posición o las opiniones de la OMC o de sus Miembros y se entiende sin perjuicio de los derechos y obligaciones de los Miembros en el marco de la OMC. Los errores que puedan existir son responsabilidad de los autores.

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