@ ShyTorque
Students tend to do what they have practiced. If they are only ever being taught to say "Practice Pan" without transmitting across the cockpit, chances are they would latterly say "Practice Pan" under real emergency conditions, when the pressure really exists.
Spot on !!
Back in the 70's I was on Ground Movement Control at Glasgow when I suddenly heard "Practice Pan, c/s, simulated engine fire". Before I could respond, I heard "er - Pan pan pan, it's not simulated, it's real", the helicopter door slid open & numerous brown jobs ran in the general direction of away. QED ?