If I do something wrong and my parents get mad, these are usually the causes.
1.) My mean brother's lying to them about bad things that I do (It's not fair, they always believe him, and I get in trouble for nothing...)
2.) If have a fight with my brother
3.) If don't play piano much (SO STRESSED!! no wonder my brother quit piano!)
Here are the effects.
1.) Something's banned for a certain amount of time, like no computer for the rest of the day, no TV for two days, etc.
2.) My mom gets really tough on me, with a loud voice, pushing me (no violence)...rarely happens, though. She feels guilty after it happens, though, and makes it up to me.
3.) I get another loud lecture from my dad. (I just stay calm and try not to care. For example, if he yells at me saying "Well? Answer me!" I just say "Oh, yeah...right, I got it." and i just get a little song in my head. XD)
I know they always feel a bit guilty in the end, though.