What does the double blue sphere icon mean?

[Katros]

It's the icon below happiness that shows up when you go into Care Mode. I've tried looking up information online but can only find info on every other icon besides that one.

[Neptune]

That's a pair of glasses. It's your partners' discipline

[Zeo]

Discipline, praise when you should and scold when you should and it will raise, do the oposite (for some evolutions) and it will decrease, mostly likely for evil Digivolutions.
It's way easier to balance those at the restaurant.

[Katros]

Originally posted by Neptune:

That's a pair of glasses. It's your partners' discipline

Those are meant to be glasses? I don't think I would have been able to tell unless someone told me, heh, though I guess it makes sense that a pair of glasses represents discipline?

[Katros]

Originally posted by Zeo:

Discipline, praise when you should and scold when you should and it will raise, do the oposite (for some evolutions) and it will decrease, mostly likely for evil Digivolutions.
It's way easier to balance those at the restaurant.

Aaaah, I see, thank you very much! I've also come to notice that fruit, vegetables and fish can influence those as well, it's nice to know what they're doing now.