Martin Pring on Price Patterns.
Head-and-Shoulders Formations as Continuation Patterns.
Quote:
"H&S and reverse H&S formations often show up on the charts as continuation
patterns. The measuring implications and volume characteristics
are the same as for the reversal type. The only difference is that these patterns
develop during a trend rather than at the end. Examples are shown
in Figs. 7-13 and 7-14." 117page.