Varying Importance of Market Outlooks Affecting Exchange Rates

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The current outlook of the market plays a key factor in how news releases will affect exchange rates. If the U.S. economy was in a recession and the market was expecting the economy to expand, the newest GDP figures would probably play a bigger role on exchange rates than unemployment figures (this is because it is common in many recoveries for GDP to expand before unemployment rates begin to drop).
Source: http://www.investorguide.com/igu-article-974-forex-trading-forex-trading-based-on-news-releases.html