So, I looked at a tactic quiz for my kiddies. I needed whopping five seconds to see that a fork (yes, that was given too!) could be applied on a square that wasn't really protected due to a pin. (I'm a big pin-overlooker, shame on me.)
Now, assume I had actually played that game. This pin surely was existent through numerous moves before, and probably at least one calculation had involved it, so I guess I had seen the move in a fraction of a second.
Thus: I assume that having actually played the game will make finding tactics easier due to "priming". This might be tested by splitting into two groups, one just gets the position, one shall replay the game move for move and "look for tactics". (Details of the methodics must be worked on still.)
In seeking a factual, cited, non-opinion-based answer: Has anyone already tried that? (If yes: Is my offhand theory correct?)
(I expect an even larger priming effect on finding good strategic moves.)