Forex trading strategies can be either manual or automated methods for generating trading signals. Manual systems involve a trader sitting in front of a computer screen, looking for trading signals and interpreting whether to buy or sell. Automated systems involve a trader developing an algorithm that finds trading signals and executes trades on its own. The latter systems take human emotion out of the equation and may improve performance.
Price action trading involves the study of historical prices to formulate technical trading strategies. Price action can be used as a stand-alone technique or in conjunction with an indicator. Fundamentals are seldom used; however, it is not unheard of to incorporate economic events as a substantiating factor. There are several other strategies that fall within the price action bracket as outlined above.

The factors mentioned above can also cause a currency to decline. For example, the currency of a country with low inflation will generally rise because that country's purchasing power is higher relative to other currencies. Even natural disasters such as earthquakes or tsunamis, which put a strain on a nation’s economy, can have a negative impact on a currency.
To easily compare the forex strategies on the three criteria, we've laid them out in a bubble chart. On the vertical axis is ‘Risk-Reward Ratio’ with strategies at the top of the graph having higher reward for the risk taken on each trade. Position trading typically is the strategy with the highest risk reward ratio. On the horizontal axis is time investment that represents how much time is required to actively monitor the trades. The strategy that demands the most in terms of your time resource is scalp trading due to the high frequency of trades being placed on a regular basis.