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Comparing Predictions and Outcomes: Theory and Application to Income Changes

 

作者: Marcel Das,   Jeff Dominitz,   Arthur van Soest,  

 

期刊: Journal of the American Statistical Association  (Taylor Available online 1999)
卷期: Volume 94, issue 445  

页码: 75-85

 

ISSN:0162-1459

 

年代: 1999

 

DOI:10.1080/01621459.1999.10473820

 

出版商: Taylor & Francis Group

 

关键词: Income expectations;Ordered-category data;Predictions

 

数据来源: Taylor

 

摘要:

Household surveys often elicit respondents' intentions or predictions of future outcomes. The survey questions may ask respondents to choose among a selection of (ordered) response categories. If panel data or repeated cross-sections are available, then predictions may be compared with realized outcomes. The categorical nature of the predictions data complicates this comparison, however. Generalizing previous findings on binary intentions data, we derive bounds on features of the empirical distribution of realized outcomes under the “best-case” hypothesis that respondents form rational expectations and that reported expectations are best predictions of future outcomes. These bounds are shown to depend on the assumed model of how respondents form their “best prediction” when forced to choose among (ordered) categories. An application to data on income change expectations and realizations illustrates how alternative response models may be used to test the best-case hypothesis.

 

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