Comparing Dynamic Specifications: The Case of Presidential Approval

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Abstract
This article compares a variety of models of presidential approval in terms of their dynamic properties and their theoretical underpinnings. Exponential distributed lags, partial adjustment, error correction, and transfer function models are considered. The major difference between the models lies in interpretation rather than statistical properties. The error correction model seems most satisfactory. Approval models based on individual level theories are examined, and found to give no additional purchase.