>0 and 0 otherwise, and n(p) is the number of nonzero elements in p.
•QuadraticUtility(Chew et al., 1991)
where ψ(x
i
,x
j
) =ψ(x
j
,x
i
) for all i, j and we normalize so that ψ(x
1
,x
1
) = 0.
•Regrettheorywithdependence(Loomes and Sugden, 1982).
This can only be used to compare two gambles p and q. The preferred gamble is
indicated by the value of the expression below:
where z is a rather complicated function of p and q and ψ
ij
=ψ(x
i
,x
j
). For details see
Hey and Orme (1994).
•Regrettheorywithindependence(Loomes and Sugden, 1982).
This is where the z tak
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