There are 4 types of forex divergences that can help predict price movements: 1) Regular bullish divergence signals a reversal from a downtrend as prices make lower lows but oscillators form higher lows. 2) Regular bearish divergence signals a reversal from an uptrend as prices make higher highs but oscillators form lower highs. 3) Hidden bullish divergence signals a continuation of an uptrend as prices make higher lows while oscillators form lower lows. 4) Hidden bearish divergence signals a continuation of a downtrend as prices make lower highs while oscillators form higher highs. Proper identification of divergences follows certain conventions for marking highs and lows on oscillators.