My point about clinical significance lies in the idea that action often requires us to operate out side the bounds of strictly construed scientific principles. Something that is useful 60% of the time is often quite useful. BTW I am a psychologist by training though I have worked in more than one hospital.
Incidentally, all of science is correlational, we only manipulate the time sequence and then evaluate antecedent consequent relationships (correlations). For some scientists this is a tricky issue and requires some serious thought.
On a slightly different tact, the scientist bases his thoughts on the data where possible and currently you do not have better data so try working with what you do have and think like a scientist within the contexts of the given limitations.
It's pointless to sidetrack this thread with too much science theory....but I can't let the idea arise that the experimental sciences don't have VERY GOOD methods of investigating causality. In the biological sciences especially, the concept of "necessary and sufficient" is the usual recipe for determining cause. If it can be shown that inoculating the subject with anthrax bacteria is NECESSARY for the symptoms of anthrax to appear (i.e., they NEVER appear otherwise), and if it can be shown that ONLY inoculating the subject is SUFFICIENT for anthrax to manifest, then, by settled convention, one has "proved" that anthrax bacteria alone specifically causes the disease (there are other, minor, incidental controls necessary). Experimental science specializes in investigating causality--at least in an immediate sense; and does it quite well.
Regarding data and "pause:" There is none. If you know differently, please link to it.
I begin by thinking the person believes what they say and that they have found it to be true. Then I look for what support I can find for their position. When support and my own experience find the idea lacking I move on.
Currently, the pause has much to recommend it and, in my opinion, it requires much study to learn its intricacies. Throwing stones at it is not useful. Now if you have something of substance, other than rhetoric, I am pleased to listen.
Here I also have to disagree from a scientific perspective. Earlier you mentioned Karl Popper. Surely you must know that the central concept he put forth in the philosophy of science is the concept of "falsifiability."
That means that, ideally, the test of a hypothesis is to FALSIFY it, not to look for ways to support it. An hypothesis is supported when good attempts to falsify it FAIL. That means that what hypotheses need is for stones to be thrown at them. I hope I don't make you too upset if I say that the above has long been known as a serious failing of clinical psychology
So, what I have to say that is substantial is: ABSENT any REASON for a pause based on fundamental principles of cognition or performance, it's up to the one offering the hypothesis ("a pause is necessary to a good stroke") to come up with evidence that the hypothesis has been successfully tested. I see no such evidence--no such "substance."
....but I will say that if some people have found it useful, they should continue. My
original post in this thread began as: "I have to argue that this is one that should be individualized by the player."
It seems I'm being taken to task for that. I'm not sure why. Pro players vary from "pauses that aren't really pauses" to "distinctive and obviously deliberate pauses." I don't see anything wrong with seeing the same variability in non-pro players.