I too enjoyed the video posted by Pavan about practice.
We have a fairly significant sub-group of members on this forum who enjoy shooting heavy bows, in the 70# + range. Occasionally one of them will start a topic about shooting heavy bows, and a lot of others will enthusiastically join in. I'm sure none of them got to the point where they could shoot 70-90# bows without being overbowed at one time or another, and most of the ones who are happily enjoying this facet of our sport do not have target panic.
We know that many people, including myself and Rod Jenkins, who have never been overbowed have gotten target panic. So if a significant number of people who have been overbowed never get target panic, and a significant number of other people who have never been overbowed do get it, then I think it is a mistake to say that being overbowed is a major cause of target panic, and I certainly don't think that it "will definitely stimulate target panic," as was stated above.
I think the one factor that all people who have gotten target panic have in common is that they all have had a lot of repetitive practice shooting the bow. I don't think anyone has gotten target panic in his first week of shooting, or probably even in his first several years of shooting. Of course, there are also many people who never get target panic at all, even though they practice a lot. It is like alcoholism: every alcoholic has drunk alcoholic beverages, but not everyone who drinks alcoholic beverages is an alcoholic.
But drinking alcohol is a more common factor in becoming an alcoholic than stress, for example, and I would carry this analogy over to target panic. Linking target panic to being overbowed is similar to linking alcoholism to stress. Some people who are already disposed to alcoholism may drink alcohol if they are stressed, and some people who are already disposed to target panic will come down with it if they are overbowed. Taking this analogy further, I believe that if a person is disposed to target panic, he will get it whether he is overbowed or not, and simply dropping down in bow weight will not prevent him from getting it or cure it.
The only thing that will cure target panic is to stop repetitive practice, and unfortunately, that would also cure shooting archery. As they say in medicine, the cure might be worse than the disease. So if we can't cure target panic, but we want to continue shooting archery and continue to improve through practice, we have to learn how to control it. That gets us back to all the mental exercises we have been discussing in this topic and other places. And I'm sure that understanding how to practice intelligently, as in Pavan's video, is a useful component in this.