Question: (Identification) Explain why Assumption 14.3 (Likelihood Identification. p. 296) does not imply that the information matrix is positive definite, provided that the information matrix exists.

(Identification) Explain why Assumption 14.3

(Likelihood Identification. p. 296) does not imply that the information matrix is positive definite, provided that the information matrix exists. (HINT: Is a negative definite Hessian a necessary condition for a local optimum?)

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