  We propose a theoretical framework under which preference profiles can be
meaningfully compared. Specifically, given a finite set of feasible allocations
and a preference profile, we first define a ranking vector of an allocation as
the vector of all individuals' rankings of this allocation. We then define a
partial order on preference profiles and write "$P \geq P^{'}$", if there
exists an onto mapping $\psi$ from the Pareto frontier of $P^{'}$ onto the
Pareto frontier of $P$, such that the ranking vector of any Pareto efficient
allocation $x$ under $P^{'}$ is weakly dominated by the ranking vector of the
image allocation $\psi(x)$ under $P$. We provide a characterization of the
maximal and minimal elements under the partial order. In particular, we
illustrate how an individualistic form of social preferences can be maximal in
a specific setting. We also discuss how the framework can be further
generalized to incorporate additional economic ingredients.
