[1] Rapid expansion of new highs is bullish, (until this expansion reaches an extreme); and,
[2] Rapid expansion of new lows is bearish, (until this expansion reaches an extreme); and,
[3] The lack of rapid expansion of new highs in an uptrend is bearish; and,
[4] The lack of rapid expansion of new lows in a downtrend is bullish; BUT,
[5] These factors should not be looked at in isolation because: (a) the order in which they occur can give further clues to later market movements, (e.g., "4" a month ago followed by "3" now suggests a retrenchment, but no new low): and, (b) many other factors need to be considered in order to construct a useful model of market movements.