Answer:
Str: Individuality, Closeness to each other (closer than extended family) 'provides the sense of consistency', Children living in a Nuclear Family get far more extensive training skills: "Research says that children from biological two-parent families have higher test scores and grade points average, they miss fewer schools and have greater expectations of attending college than children living in with one parent".
Weak: Lack of: commitment, duty to family, interaction with family.