Vector Autoregressions
Vector Autoregressions
Vector Autoregressions
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Timing Assumptions• ‘Extreme’ Assumption:– Output Does Not Respond Instantly to PolicyShock– Policy Responds Instantly to Output• Could Make a Continuum of AlternativeAssumptions: Is Our Choice Arbitrary?Fact: Innovations in Output and Interest• Fact: Innovations in Output and InterestRate are Positively Correlated