It is one mechanism, and we have measured it on both sides.
On a model: the more rules in play at once, the fewer get followed.
We have measured it, and the numbers are on the AI page.
On people: it is why a mandatory course that goes through the whole rule-set
once a year rarely changes anything. Not because people do not care — because nobody can
hold 56 things in their head while they work.
The treatment is the same in both places: show the one rule that is relevant, where
the decision is made — and remove what makes it hard to follow. The method behind it is Behavioral Friction Theory.
We have also written about it as research:
Compliance is
behaviour, not information — which is why repeating a rule people already know does not help.