ALWAYS... ALWAYS...
As ridiculous as this may sound, it always does. You'll have to really be open minded about this and really monitor a few items on a chart. You don't need to analyze to observe that volume leads price but you certainly should be aware of it. The analysis part is needed to effectively trade the leading variable. So here's some very simple logic which is in fact true. Look at the T&S. There are many executions on the T&S. If you string along a bunch of executions, you'll notice that the 2 types of volume showing on the T&S is increasing with respect to the previous pivot. One will be increasing more than the other and dominating and with respect to it's pair. Eventually, the leading volume value will exceed a critical value and THEN a new price emerges. All price charts/lines are a result of this continuous repeated sequence... You'll also notice that if you strip any graph with any chart and just look at individual bars, you will notice that there is very strong relationship with volume and price (ie. large volume changes also result in large price changes). Is price leading volume in these bars? That would be saying that change in volume is a result of change in price. Your Q is a good one since you are aware of both price and volume which as 2 variables. How do you regard these 2 variables?