If you set up in the center of the plate expecting an outside pitch, and that pitch is more then "just outside", you now have a passed ball.
when teaching catchers to receive balls (frame if you will), incorporate a slight weight shift to the direction of the ball
If a runner is on base and catcher sets up early the runner will signal to the hitter at the higher level . Like someone posted our pitcher is taught to aim at a shinguard not the glove. Plus good hitters can see the catcher out of the corner of the eye move .
I just don't think the umps are as fooled as everyone thinks. A chatty confident catcher can probably do more with her personality and that little 'I got it and like it' at the end with the mitt, than she can be trying to fool the ump with her body/arms placement.
Also the logic of it going where the catcher wants is not 100%. Sometimes you are throwing out of the zone on purpose. 30=40% of the time the pitcher fails to hit the intended target.
I had a girl a few weeks ago that was not only making huge moves side to side, she would also take a big step forward at the same time...comp