[jpeters1734]

Based off what Matt said, this is how I understand it:

Traditionally, players will stop developing around 23-25ish. This is the "normal development target age". Setting dev target age to younger means that players will stop developing around 21-23ish. Set it to older, and they will stop developing around 25-27ish. Of course, I don't know the exact ages, but this is just an illustration.

This is very different than development speed. Setting dev target age to younger simply means the player has less time to reach his potential before he stops developing. It does not mean that players will develop quicker. That is what development speed does.

It's the same concept for the aging target age. It has nothing to do with how quickly a player's attributes deteriorate once he begins deteriorating. That last part is key. Traditionally, we've seen players start deteriorating around 30-33. Setting the aging target age to older means that they will begin deteriorating a little later around 32-35ish. Again, the aging speed controls how fast he will deteriorate once it begins.

Hope that helps