Do crosswalk buttons actually work?

I have read that most don't. The lights are on a timer and the button is there for psychological relief.

No they don't, the lights are on a timer.

Yes they do work.............

Sometimes but usually not

I think it just gives you something to do while you wait for the light to change in your favor.

Yes they do, and you don't have to press them more than once - although i still do.

Most of them do work.