The psychology behind the Harami Cross formation is similar to that of the regular Harami pattern. At first, a clearly visible market trend is in place. Then, all of a sudden, the market reverses within one trading day, without exceeding the candlestick range of the previous day.
One of the drawbacks is that the market closes at the same price as it opened. The trading volume of the Doji day also fades out, reflecting the complete indecision of market participants. Thus, this chart figure signals a strong potential trend reversal.
The color of the long day candle should reflect the trend direction. The Doji may have opening and closing prices that diverge by 2 or 3 percent (only if there are no Dojis in the preceding data).
The bullish and bearish variations of the Harami Cross both come down to a single candlestick that supports their interpretation in most cases. The body of the reduced single-day candle may be considerably longer than what is allowed for the Paper Umbrella or Hammer formations.
Note that transformation confirms the nature of this pattern.
The Harami Cross may well be the beginning of a chart figure called Rising (or Falling) Three Methods, depending on the price action within the next several days. The Rising and Falling Three Methods formations are continuation patterns, which come in contradiction with the signal sent out by the Harami Cross.