How does Kenny show affection for his parents?

Kenny demonstrates his love and affection for his parents by paying close attention to their moods..... he then responds accordingly.

I knew Dad was kind of disappointed by the way Momma had acted. She really hurt his feelings by walking off like that. Some of the time I think she forgot how sensitive Dad was. Even though he acted cheery with us I knew it wasn't the same for him now. I knew if Momma had stayed and hadn't gone off mumbling about money we would have been having a lot more fun.