Imposing moment restrictions from auxiliary data by weighting

Article Abstract:

Data from the 1980 wave of the National Longitudinal Survey Young Men's Cohort were used to study the estimation of coefficients in regression models under moment restrictions in which the moment restrictions are derived from auxiliary data. It was shown that efficient estimators can be characterized as weighted versions of the estimators that would apply in the absence of moment restrictions. The interpretation of these estimators with and without making the assumption that the primary data and the aggregate data reflect the same distribution was examined.

Research, Estimation theory, Correlation (Statistics), Mathematical statistics

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Job vacancies in the United States: 1923 to 1994

Article Abstract:

Data obtained from a job vacancy statistics covering the period 1923-1994 revealed that there are an average 2.33 unemployed job seekers for every vacant job. The covered period also revealed that there were only five years, such as 1923, 1943 and 1945, when the number of vacant jobs exceeded the number of out-of-work individuals. A consistency between Conference Board (CONF-HWI) and Metropolitan Life Insurance Company help-wanted index (MET-HWI) was also noted from the data.

Economics, Research and Development in the Social Sciences and Humanities, Statistics, Help-wanted advertising, Help wanted advertising, Unemployed workers, Job vacancies

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Nonparametric tests for the independence of regressors and disturbances as specification tests

Article Abstract:

An analysis of nonparametric tests for general model misspecification tests reveals that the correlation integral test provides good power while appearing to be less sensitive than the two other tests evaluated. The two other tests are the X2 tests and the RESET tests and both nonparametric tests used build upon the BDS test developed to detect nonlinear dependence in univariate time series.

Methods, Usage, Testing, Nonlinear theories, Specifications, Nonlinear mechanics, Chaos theory

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