I've had a superior (5) one for a while now, and i'm pretty satisfied with the results. Granted i also have a massage doctor and for the most part i keep good minutes distribution during the week.
Now i can't speak to the difference between 4 and 5, as i've never had an advanced psychologist, but overall i think having a psychologist is definitely worth the investment for a higher level team.
For example, i have a player with 9 stamina, who alongside the 5 psychologist and massage doctor has been able to maintain or improve 8/9 game shape when playing 80-82 minutes within a week multiple times. This is an extreme case though, so take it for what it's worth. With 88 minutes (one situation) he went from 9 to 8 with the same conditions.
I'm not sure if it has been studied enough, but stamina plays a role too, when it comes to "overplaying" players in a given week. That being said, the "benefits" are a few minutes of game time. Don't expect miracles if you go above 100 minutes in the given week.
To generalize, i feel like the psychologist alongisde the massage doctor has made "80 minutes" feel like "75 minutes" in game shape language.
Last edited by Xsago at 6/16/2020 8:39:46 AM