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予測機関の予測形成様式, On Economic Forecasts by Forecasting Institutions

Author

Listed:
  • Asako, Kazumi
  • Yamasawa, Nariyasu

Abstract

本稿では,17の個別予測機関の予測形成様式を考察対象として,経済予測が経済指標の実際の変動と整合的になされているか否かを検証する.まず,この分野の嚆矢ともいえる浅子・佐野・長尾(1989)をアップデートする分析を行い,個別予測機関の予測の的中具合など,多くの点でほぼ同様の結論が得られることを確認する.次いで,実積値のデータから時系列モデルの範囲で各予測項目の「真のモデル」を探り,個別予測機関がその「真のモデル」を理解し有効に利用しているかを検証する.その結果,GDP 成長率やインフレ率については,どの予測機関についても真のモデルと整合的に予測形成を行っているとの仮説を棄却することはできない.しかし,「真のモデル」を修正し財政金融政策の効果を導入すると,実績値には財政金融政策の効果が及ぶにもかかわらず,予測形成時にはその効果が顧みられないとの,合理的期待形成仮説にとっては否定的なインプリケーションが得られる., We examine the process of formation economic forecasts by 17 economic forecasting institutions including the Japanese government. We first update the analysis of Asako, Sano, and Nagao (1989) and find that most of their implications are replicated for the updated sample period. We then test the null hypothesis that each forecasting institution makes forecasts consistent with the “true model” which governs the dynamic processes of respective economic indicators. The test result is not-rejected (or accepted) insofar as the true model is selected within the confines of a simple time series model but it is rejected once the policy effects of monetary and fiscal measures are taken into account.

Suggested Citation

  • Asako, Kazumi & Yamasawa, Nariyasu, 2005. "予測機関の予測形成様式, On Economic Forecasts by Forecasting Institutions," Economic Review, Hitotsubashi University, vol. 56(3), pages 218-233, July.
  • Handle: RePEc:hit:ecorev:v:56:y:2005:i:3:p:218-233
    DOI: 10.15057/21520
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