Students often arrive confident they have spotted a hammer, only to discover the bar appeared after a three-week rally rather than a decline. Same anatomy — small body at the top, long lower wick — different name and implication.

Shared anatomy

Both patterns show a real body near the upper end of the range and a lower shadow at least twice the body length. The open and close may be bullish or bearish; colour matters less than placement within the recent swing.

Hammer: look left for a downtrend

A hammer becomes meaningful when it forms after a visible decline. On our PTT handout example from January, five lower highs preceded the hammer bar. The long wick shows sellers pushed price down intraday, but buyers closed near the open — a pause in downward pressure, not a guaranteed reversal.

We ask students to trace the trend with a straight edge before labelling. If you cannot draw at least three descending peaks to the left, call it an unclassified long-wick bar instead.

Hanging man: rallies end with hesitation too

The hanging man appears after an advance. The wick suggests intraday selling appeared near the highs even though price recovered to close near the open. Alone it is a warning, not a sell signal. We pair it with the next session's bar in the clinic: if follow-through is bearish, the hanging man gains weight.

Common misread in Thai SET mid-caps

Volatility spikes around earnings produce long-wick bars mid-range. Beginners label these hammers because the wick is dramatic. Instructor review usually reveals no preceding trend — just a gap day. Mark the bar, note "no trend context," and move on. Discipline beats forcing a pattern name.

Drill for home

Print one month of a single SET stock. Highlight every long lower wick. Split them into two piles: after decline, after advance. Only then assign hammer or hanging man labels. Bring the page to a workshop Q&A if you want verification.