In practice, some dogs get the idea very quickly and jump through
the steps, while others struggle to move from one step to the next.
Combining steps is a technique whereby you click for any behaviour
in, for example, the first three steps. So in our example, you would
c/t for an eye flick, a slight head turn or a stronger head turn.
Once you're getting 8 or more out of 10 strong head turns (step
three), you stop clicking for just an eye flick (step one) and click
only for head turns (steps two and three). Once he's doing step
four reliably (moving his head toward the dresser) you would stop
clicking for step two, and so on.