I can't speak for Amadeus, but Photoshop Elements 12 works quite well on my system currently running Mavericks 10.9.2. One glitch is an annoying message that pops up on launch indicating the installations is damaged. Everything continues to work correctly once it is launched and no amount of troubleshooting or reinstallation has been able to stop it.
If we knew what it was we were doing, it wouldn't be called research, would it?
