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Pierre André Chiappori (Columbia) "Family Economics" - Cemmap

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154 3. Preferences and decision making<br />

ub ub U b<br />

UPF(P,p,x)<br />

�� �� ∂W/∂u a<br />

∂W/∂u b ∂W/∂u b<br />

W’s indifference<br />

curve<br />

ua ua FIGURE 3.5. Linear and non linear generalized Samuelson index<br />

FIGURE 3.6. All utilities in the shaded area correspong to the same μ<br />

μ<br />

U a

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