I suspect that the age of the children has a big impact on the results. The study was of 3-7 year olds. If you remember it well then you were at the upper end of that range, if not older.
Yes. The Boy Who Cried Wolf has other issues, as well, though; I remember thinking (as a child) that it was as much the villagers' fault for not believing the kid as it was the kid's fault for lying before.