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1 - 10 van 60 voor unobserved factors
Microsoft Word - discussion64.doc
... a variable (the instrument) that is correlated with studying abroad ( zi ) and not with the unobserved factors of the outcome variables ( ui ). if we only use the variation in studying abroad induced ... on unobserved factors. we do not know whether the variation in living abroad that is associated with the variation in studying abroad is caused by the variation in studying abroad or by unobserved ...
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Microsoft Word - cpbdoc113.doc
... , such as in flinn and heckman (1983). assume that transition probabilities depend on unobserved labour market conditions, and interpret eigenvectors of the transition matrix as equilibrium employment, ... to national rates, because any correlation between unemployment and inactivity may be due to unobserved factors that are not related to labour market conditions. 32 that current inactivity cannot ...
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does education reduce probability being overweight pdf
... unobserved factors that are important for health. therefore, the crucial research question is whether the so-called gradients in health by education are causal effects of education or the result of unobserved factors ...
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... productivity by an amount that ranges from roughly however, these studies did not control for unobserved factors, such as the composition of the local workforce, that recent work has shown to result ...
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effect childhood conduct disorder human capital pdf
... twins might be more able than the other twin and this unobserved ability may be correlated with conduct disorder. unobserved heterogeneity might also come from differences within twins pairs in ... and positive and negative human capital outcomes. as these estimates might be biased by unobserved factors we proceed with estimating within twin fixed effect models ijjijijij fxcdhc ++++ (4.1) where ...
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Microsoft Word - discussion139.doc
... correlation between unobserved (twin) effects to obtain consistent estimates. in our analysis, the twin aspect of our data is used to control for unobserved heterogeneity, reflecting unobserved genetic ... time invariant unobserved factors. including the average completed education per twin pair in the regression would then control for potential endogeneity biases that are due to these unobserved twin ...
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effects competition quality primary schools netherlands pdf
... . in addition, due to the selection of parents into certain neighbourhoods, there might be unobserved factors affecting the pupils' performance which may also be correlated with competition, causing competition to ... school-town centre should not be correlated with the quality of schools (or other unobserved variables affecting the quality of schools). these are empirical issues that will be addressed ...
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Microsoft Word - discussion33.doc
... unobserved factors. whereas we can correct for the observed factors (the most important being the student's socio-economic background), the influence of unobserved factors (such as the student's motivation) cannot be ruled out. when the incidence of treatment depends on unobserved factors ...
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impact social capital crime pdf
... crime, which in turn may result in even lower levels of social capital. a third unobserved variable could affect both crime and social capital. for example, certain policies implemented by the ... tests, however this is not a bullet proof that the instruments are not correlated with unobserved factors that might affect crime as well. having used many socio-economic indicators as right-handside ...
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Microsoft Word - discussion150.doc
... track fixed effects regressions with additional quality variables that theoretically have a larger correlation with unobserved factors such as the reputation of a certain school track. the estimates in column vii ... the data underlying the trouw scores in t+1 (gathered at t-2) and unobserved factors determining school choice at time t is substantial. however, the relevant trouw score estimates ...
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