A vitally important point from the Magus above.
While monitoring a colleague or trainee's performance those three little questions are a life saver:
"How does the aircraft feel?"
"What is our airspeed?"
"What is our heading?"
In terms of this discussion the questions themselves are almost immaterial - they just simply and very effectively establish whether someone is tunneling/oversaturated long before any visual signs. Hearing shuts down first just about without exception.
If you've any doubts regarding this spend the next few trips asking this of the person next to you after their landing. What was the wind read out was when landing clearance was given? Over a month or so you'll become pretty convinced of the value The Magus offers us with those comments and thoughts above.
Rob