Forecast Failure, Expectations Formation, and the Lucas Critique.

Since forecast failure is due to unanticipated large shifts in deterministic factors,'sensible' agents should adopt 'robust forecasting rules'. Unless the model coincides with the generating mechanism, one cannot even prove that causal variables will dominate non-causal in foreca...

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Main Author: Hendry, D
Format: Working paper
Language:English
Published: Nuffield College (University of Oxford) 2000
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author Hendry, D
author_facet Hendry, D
author_sort Hendry, D
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description Since forecast failure is due to unanticipated large shifts in deterministic factors,'sensible' agents should adopt 'robust forecasting rules'. Unless the model coincides with the generating mechanism, one cannot even prove that causal variables will dominate non-causal in forecasting. In such a non-stationary world, 'rational expectations' do not have an epistemologically-sound basis: agents cannot know how all relevant information enters the joint data density at every point in time. Thus, although econometric models 'break down' intermittently when deterministic shifts occur, that is not due to the Lucas critique and need not impugen their value for policy analyses.
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spelling oxford-uuid:5b970f13-e9e7-4f58-86ee-a370ed534b052022-03-26T17:22:58ZForecast Failure, Expectations Formation, and the Lucas Critique.Working paperhttp://purl.org/coar/resource_type/c_8042uuid:5b970f13-e9e7-4f58-86ee-a370ed534b05EnglishDepartment of Economics - ePrintsNuffield College (University of Oxford)2000Hendry, DSince forecast failure is due to unanticipated large shifts in deterministic factors,'sensible' agents should adopt 'robust forecasting rules'. Unless the model coincides with the generating mechanism, one cannot even prove that causal variables will dominate non-causal in forecasting. In such a non-stationary world, 'rational expectations' do not have an epistemologically-sound basis: agents cannot know how all relevant information enters the joint data density at every point in time. Thus, although econometric models 'break down' intermittently when deterministic shifts occur, that is not due to the Lucas critique and need not impugen their value for policy analyses.
spellingShingle Hendry, D
Forecast Failure, Expectations Formation, and the Lucas Critique.
title Forecast Failure, Expectations Formation, and the Lucas Critique.
title_full Forecast Failure, Expectations Formation, and the Lucas Critique.
title_fullStr Forecast Failure, Expectations Formation, and the Lucas Critique.
title_full_unstemmed Forecast Failure, Expectations Formation, and the Lucas Critique.
title_short Forecast Failure, Expectations Formation, and the Lucas Critique.
title_sort forecast failure expectations formation and the lucas critique
work_keys_str_mv AT hendryd forecastfailureexpectationsformationandthelucascritique