Is there any basis for the original premise?
Absolutely. It was the subject of a Science Channel or NatGeo documentary. I think it was about fear in general.
This is related to the "gut instinct". The mind, the subconscious mind, is always analyzing info based on things you've learned and experienced. In an absence of this subconscious analysis, or in presence of learned programming (city is bad, dark streets danger, etc.) a feeling of fear will prevade. This is why fear mongering works in politics and government --in absence (of the whole truth in the case with politics) the subconscious is left only with the knowledge of the possibility of danger and that, theoretically, will affect the outcome of the decision without the decision maker ever knowing the difference. Some psychology is hokey, some is obvious, some is so discreet you would never know it was being used on you. In all cases, you aren't aware of it until the decision needs to be made, and then you stand there all confident in your decision, but where did that confidence come from? Ever ask yourself that?
I've mentioned this on here before. Learning about this helped me understand the gut feeling I've felt just before real danger happened, how I knew danger was getting ready to happen, and that I should never ignore the gut feeling.
What I find funny, is that this so deeply programmed in human nature, so automatic, that most of you on here even doubt that this is how it works. But when you really think about it, it all makes sense. It made a lot of sense to me, having survived a few situations where I ignored the gut feeling. I thought I knew more about survival, the conscious me, than did the hardwired me with thousands of years of evolution and subconscious data being analyzed faster than a computer.
Having a "dual citizenship" in both country and city, I don't experience fear like that. I understand it though, I have experienced it before. Like I said, in absence of hard data, the mind wanders and uses what it has been told to fill in the blanks. If you said you joined the military and experienced no apprehension when that bus stopped, no feeling of "did I do the right thing?" or possibly even the gut feeling, then you are either not human or lying. It was the feeling of the unknown. No danger, just an absence of data, and an expectation of screaming.
I was actually the most surprised when nobody got on the bus to scream. I expected it. The guy, very bored, said "welcome to Ft. Benning, please exit the bus and take a seat inside."