Collective consumption decisions taken by the members of a household may prove inefficient. The impact of such inefficient household decisions on market performance is investigated. At one extreme, market efficiency can occur even when household decisions are inefficient, namely when household...

We consider a general equilibrium model where groups operating in a competitive market environment can have several members and make efficient collective consumption decisions. Individuals have the option to leave the group and make it on their own or join another group. We study the effect of...

We examine how a shift of bargaining power within households operating in a competitive market environment affects equilibrium allocation and welfare. If price effects are sufficiently small, then typically an individual benefits from an increase of bargaining power, necessarily to the detriment...

The relationship between our general equilibrium model with multi- member households and club models with multiple private goods is investigated. The main distinction in the definitions consists of the equilibrium concepts. As a rule, competitive equilibria among house- holds where no group of...

Collective consumption decisions taken by the members of a household may prove inefficient. The impact on market performance depends on whether household inefficiencies are caused by inefficient net trades with the market or by inefficient distribution of resources within households. Inefficient...

We consider a general equilibrium model where households operating in a competitive market environment can have several members and make efficient collective consumption decisions. Individuals have the option to leave the household and make it on their own or join another household. We study the...

We introduce uncertainty in our general equilibrium model with multi-member groups, following the classical state-space approach of Arrow- Debreu. A host of new interesting economic issues emerge. First, risk averse agents can attempt to insure themselves through markets or through mutual...

We examine the validity of a macroeconomic version of the Modigliani-Miller theorem. For this purpose, we develop a general equilibrium model with two production sectors, risk-averse households and financial intermediation by banks. Banks are funded by deposits and (outside) equity and monitor...

The relationship between our general equilibrium model with multimember households and club models with multiple private goods is investigated. The main distinction in the definitions consists of the equilibrium concepts. As a rule, competitive equilibria among households where no group of...

We consider firms and multi-member households operating in a competitive market environment. Households are endowed with resources (commodity bundles) and shares of firm ownership. Household members are characterized by individual preferences, possibly with intra-household consumption...