This is entirely besides the point of the study and the article, but why are the Americans the only ones who, in terms of human energy intake/consumption, say calorie when it should be kilocalorie? Why do they insist on being one thousand times off? "It's easier"? From where does this come from, and why does the rest of the world insist on being accurate?
...and the case-sensitive nature of this confusion is exactly the point I'm trying to get across - people just don't know the difference. A Calorie is a calorie! Just read the nutritional declaration on a few American food products and you'll find an equal amount of both. MB, Mb or mb, anyone?
I've reread you original post and don't see any mention of case sensitivity. In fact you insisted that americans use inproper unit (1000 times off), which is not true at all.
Also, I always pay attention to food labels and never noticed any confusion. As far as I can tell the units on Nutrition Facts label are always correct.[1]
