Discipline
Sometimes your Tamagotchi will call for attention without being hungry or unhappy.
You must give them discipline when this happens.
There are two kinds of discipline:
ใใใ [Time out]
You must scold your Tamagotchi when they are acting out.
They'll lose a Happy heart, but their discipline level will increase.
Ignoring this call would be a physical care miss.
Choosing the time out option for no reason will make them lose a Happy heart, too...
ใชใงใ [Praise]
Sometimes your Tamagotchi will be in a bad mood and will need to be cheered up.
Toddlers will show this by crying, teens will turn their back to you.
Praise them and they'll get a Happy heart. Their discipline level will increase, too.
Ignoring this call would be a mental care miss.
Do keep in mind there are two kinds of discipline here, unlike on the original Tamagotchi versions.
You can only punish them in those, and it seems it was a bit harsher back then...