Dominant reading:
** Lisa uses her intellect to avoid disappointment and failure
**Bart uses his charm and gets away with naughty behaviour
** Marge acts as the devoted mother and wife figure and supports the family

Negotiated reading:
**Homers lack of intellect and high stupidity levels, he still gets out of bother
** Fact that homer acts as a waste of space and literally is

Oppositional reading:
** Homer serves no purpose, he provides nothing for his family but bother.