Short-term trends typically last 3 to 6 weeks, sometimes shorter and sometimes longer. They interrupt the course of the intermediate cycle, just as the intermediate-term trend in terrupts primary price movements. Shortterm trends are shown in the market cycle model (Figure 1.1) as a dashed line. They are usually influenced by random news events and are far more difficult to identify than their intermediate or primary counterparts.
major Technical Principle
As a general rule, the longer the time span of a trend, the easier it is to identify. The shorter the time span, the more random it is likely to be.