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Abstract(s)
O presente estudo analisa se existe relação entre a manipulação de resultados e a qualidade da auditoria, baseado no estudo do comportamento dos accruals discricionários nas empresas portuguesas cotadas e não cotadas. A amostra é composta por 11 813 empresas para o período de 2013 a 2015. A literatura sugere que existe uma relação entre a qualidade da auditoria e a manipulação dos resultados, propondo que as empresas de auditoria Big4 apresentam níveis mais elevados de qualidade de auditoria, quando comparadas com as restantes empresas de auditoria, pelo que têm um impacto superior no constrangimento da manipulação dos resultados. A literatura sugere ainda que as empresas não cotadas apresentam uma prática de gestão de resultados mais pronunciada comparativamente às empresas cotadas. Na presente investigação, para o estudo das manipulações dos resultados, será usada a metodologia dos accruals discricionários, calculado segundo o modelo de Jones modificado (1995). Os resultados obtidos, em conformidade com a literatura existente, sugerem que as empresas não cotadas apresentam uma prática de manipulação de resultados mais pronunciada comparativamente às empresas cotadas. Os resultados sugerem ainda que, existe uma associação estatística significativa entre os accruals discricionários e a opinião de auditoria, induzindo a eficácia dos auditores, isto é, auditores de melhor qualidade, associados às empresas Big4, constrangem em maior grau as empresas na manipulação dos resultados.
The present study examines if there is a relationship between the manipulation of results and the quality of the audit, based on the study of the behavior of discretionary accruals in Portuguese companies listed and non-listed companies. The sample is composed by 11 813 companies for the period 2013 to 2015. The literature suggests that there is a relationship between the quality of the audit and the manipulation of the results, suggesting that companies Big4 audit present higher levels of audit quality, when compared with other companies, by the audit which has a higher impact in the embarrassment of the manipulation of the results. The literature also suggests that non-listed companies present a management practice of results more pronounced compared to listed companies. In the present investigation, for the study of the manipulations of the results, the methodology will be used discretionary accruals, calculated according to the modified model of Jones (1995). The obtained results suggest that non-listed companies present a practice of manipulation of results more pronounced compared to listed companies. The results suggest that there is a statistically significant association between discretionary accruals and the audit opinion, inducing the efficiency of auditors, i.e., best quality auditors, associated with Big4 firms, constrain to a greater degree the companies in handling the results.
The present study examines if there is a relationship between the manipulation of results and the quality of the audit, based on the study of the behavior of discretionary accruals in Portuguese companies listed and non-listed companies. The sample is composed by 11 813 companies for the period 2013 to 2015. The literature suggests that there is a relationship between the quality of the audit and the manipulation of the results, suggesting that companies Big4 audit present higher levels of audit quality, when compared with other companies, by the audit which has a higher impact in the embarrassment of the manipulation of the results. The literature also suggests that non-listed companies present a management practice of results more pronounced compared to listed companies. In the present investigation, for the study of the manipulations of the results, the methodology will be used discretionary accruals, calculated according to the modified model of Jones (1995). The obtained results suggest that non-listed companies present a practice of manipulation of results more pronounced compared to listed companies. The results suggest that there is a statistically significant association between discretionary accruals and the audit opinion, inducing the efficiency of auditors, i.e., best quality auditors, associated with Big4 firms, constrain to a greater degree the companies in handling the results.
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Keywords
Gestão de resultados Accruals discricionários Empresas cotadas e não cotadas Qualidade da auditoria Big4 Listed and non-listed companies Management of results Discretionary accruals Audit quality