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Where x is proportional to the degree of risk aversion, θ, bt, and b*t are the shares
of world wealth in domestic assets and foreign assets respectively and var(st+1) is the
conditional variance of the future exchange rate. Or as in a bond-market led speculative
attack model as:
i=i* +∆set+1 +θ(bt -bt* -st)
Another interesting modification specific to emerging markets is suggested by
Arida, Bacha and Lara-Resende (2004) wherein the risk premium depends on the
interaction between judicial uncertainty (the uncertainty that contracts will be enforced
by courts) and capital controls.