2010
DOI: 10.2139/ssrn.1593187
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Endogeneity in Corporate Finance Empirical Research (In Portuguese)

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Cited by 15 publications
(21 citation statements)
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“…However, it is very difficult to find a set of valid instruments. Although the first assumption (the significant correlation between the instruments and the endogenous regressor) can be easily verified, the second (the lack of correlation between the instruments and the model's error term) is not easily verifiable because the error term is not directly observable (Barros et al, 2010). Drakos and Bekiris (2010) The results generally pointed to the existence of a quadratic relationship between large shareholders' shareholding (who owned more than 5% of the shares) and Tobin's Q.…”
Section: Empirical Studies and Econometric Problemsmentioning
confidence: 96%
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“…However, it is very difficult to find a set of valid instruments. Although the first assumption (the significant correlation between the instruments and the endogenous regressor) can be easily verified, the second (the lack of correlation between the instruments and the model's error term) is not easily verifiable because the error term is not directly observable (Barros et al, 2010). Drakos and Bekiris (2010) The results generally pointed to the existence of a quadratic relationship between large shareholders' shareholding (who owned more than 5% of the shares) and Tobin's Q.…”
Section: Empirical Studies and Econometric Problemsmentioning
confidence: 96%
“…Considering the multiple regression technique, which is the most frequently used technique by researchers working on the subject, three sources of endogeneity must be highlighted that could derail the studies' results: the omission of variables, the feedback effect, and the reverse causality ("simultaneous determination") (Börs-ch-Supan & Köke, 2002;Barros, Castro Júnior, Silveira, & Bergmann, 2010). Technically, as explained by Barros, Castro Júnior, Silveira, and Bergmann (2010), the "assumption of exogeneity of the regressors" in the regression model excludes the possibility of correlation between the explanatory variables and the random error term. If this assumption is invalid, the regressors are endogenous and should mitigate endogeneity; otherwise, the parameters will be biased.…”
Section: Empirical Studies and Econometric Problemsmentioning
confidence: 99%
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“…Ou seja, enquanto a inferência assintótica a partir dos erros padrão obtidos pelo ajuste de um modelo GMM-one-step é relativamente mais realista, o estimador two-step é assintoticamente mais eficiente (ROODMAN, 2006). Uma forma de lidar com a tendência de a variante two-step subestimar 7 Entre as principais causas de quebra do pressuposto da exogeneidade estrita em modelos de finanças estão: i) retroalimentação da variável dependente para os regressores, ii) simultaneidade (isto é, ambiguidade no sentido das relações de causalidade esperadas), iii) erros de mensuração dos regressores (BARROS et al, 2010). 8 O pressuposto da exogeneidade estrita não é atendido, por definição, pelos valores defasados da variável dependente -isto requereria que os erros do modelo fossem não correlacionados com valores futuros dos regressores, no caso da variável dependente defasada isto implicaria, por exemplo, ( ) = 0, o que não é válido.…”
Section: Camila Veneo Campos Fonseca and Rodrigo Lanna Franco Da Silveiraunclassified
“…De acordo com os trabalhos de Köke e Börsch-Supan (2000), Silveira (2006), Larcker e Rusticus (2010), Barros et al (2010) e Silveira (2010, as quatro principais limitações desta pesquisa e suas respectivas formas de mitigação são descritas a seguir.…”
Section: Limitações Da Pesquisa E Formas De Mitigaçãounclassified