Businessmen's expectations are neither rational nor adaptive

Nerlove, Marc ; Schuermann, Til

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URN: urn:nbn:de:bsz:180-madoc-29177
Document Type: Working paper
Year of publication: 1997
The title of a journal, publication series: None
Publication language: English
Institution: Sonstige Einrichtungen > ZEW - Leibniz-Zentrum für Europäische Wirtschaftsforschung
MADOC publication series: Veröffentlichungen des ZEW (Leibniz-Zentrum für Europäische Wirtschaftsforschung) > ZEW Discussion Papers
Subject: 330 Economics
Subject headings (SWD): Schweiz , Großbritannien , Rationale Erwartung , Führungskraft , Industrie , Unternehmer , Schätzung
Individual keywords (German): Erwartungstheorie
Abstract: A framework which allows for the joint testing ofthe adaptive and rational expectations hypotheses is presented. We assume joint normality of expectations, realizations and variablesin the information set, allowing for parsimonious interpretationof the data; conditional first moments are linear in the conditioningvariables, and we can easily recover regression coefficients fromthem and test simple hypotheses by imposing zero restrictionson these coefficients. The nature of the data, which are responsesto business surveys and are all categorical, requires simulationtechniques to obtain full information maximum likelihood estimates. We use a latent variable model which allows for the constructionof a simple likelihood function. However, this likelihood containsmulti- (four)dimensional integrals, requiring simulators to evaluate. Simulated maximum-likelihood estimation is carried out usingthe Geweke-Hajivassilou-Keane (GHK) method, which is consistentand has low variance. The latter is crucial when maximizing thelog-likelihood directly. Identification of the parameters isachieved by placing restrictions on the response thresholds and/orthe variances. We find that we can reject both hypotheses.
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