Factors changing household structure and characteristics include delayed marriage and cohabitation, dual-career families, divorce, smaller families, and same-sex couples.
Household decision roles include gatekeeper, influencer, decider, buyer, and user, and expressive role involves an indication of family norms, while instrumental role affects the buying decision.
Social class fragmentation is when class divisions become blurred due to increased availability of mass media and advances in communication technology.
Spouses make decisions in different ways, with the husband typically making dominant decisions, the wife making autonomic decisions, and decisions made jointly by both.