When riding solo or not in a pace line, how many of you 50+'rs signal when
*slowing down or stopping on a MUP or street - Always
* Tuning right or left - on a MUP? - Always
* Turning right or left on a street/highway? - Always
* Changing lanes? - Always - Even on a MUP, I scan and signal whenever I change lines, e.g. when moving left to pass someone and when pulling back to the right

Like Pamestique pointed out, I think scanning and signaling have to be habitual. Otherwise one is likely to forget to do it at a time when it is most important.

When preparing to turn in a situation where I have to slow or stop before the turn , I always signal the turn and do not bother with signaling the stop. I think it confuses drivers when a cyclist gets to alternating their hands between stop and turn signals.

In Colorado, you may legally signal a right turn by pointing to the right with your right hand. Can you legally do that - do you do that - in your state?
In IL you can signal either way ... with your left hand pointing up, like a car driver, or with your right hand pointing right. I always point with my right hand. Nobody under the age of 50 knows what an up pointing left hand means anymore.

Anyone use or consider bright or flourescent gloves to show your signallling better?
I think reflective material is important if one expects signals to be seen at night. My gloves have retroreflective material on the backs.

Anyone use signal turning lights? Brake lights? - Not I

Do you find a change in signalling habits as you grow a bit older? Signaling and scanning has become more habitual