A Simultaneous Equation Analysis of Advertising, Concentration and Profitability

1981 ◽  
Vol 47 (3) ◽  
pp. 728 ◽  
Author(s):  
Emilio Pagoulatos ◽  
Robert Sorensen
2018 ◽  
Vol 31 (2) ◽  
pp. 167-183 ◽  
Author(s):  
Mouna Ben Rejeb Attia ◽  
Naima Lassoued ◽  
Mohamed Chouikha

Purpose The purpose of this paper is to examine the relationship between state ownership and firm profitability in developing countries by considering the endogenous nature of state ownership and firm profitability. Design/methodology/approach A simultaneous equation analysis is applied to study 232 Tunisian firms over the 2001-2013 period. This analysis is compared with OLS estimates to show its power in terms of an endogenous setting and its potential to improve estimation. Findings Unlike the OLS estimates that show a non-significant relationship between state ownership and firm profitability, the simultaneous equation analysis reveals a non-symmetrical concave relationship. Specifically, state ownership affects positively firm profitability when it is relatively small and negatively when state ownership dominates. Specification test indicates that both state ownership and firm profitability are endogenous. Furthermore, the simultaneous model’s explanatory power exceeds that of OLS estimates and proves to be a suitable estimation technique. Practical implications Taking into account public firms’ categorization, the authors implicitly examine the effect of privatization and corporatization on firm profitability. The findings imply that privatization is not the only solution to the operational problems of public firms, but an internal governance system restructuring can also be favorable for these firms. Originality/value In addition to focusing on a new database of developing countries, the case of Tunisian firms, the main empirical analysis is conducted by considering the endogeneity issue. Thus, the findings improve understanding of the role played by state ownership and suggest that a partial state control appears to be beneficial to firm profitability.


Respuestas ◽  
2021 ◽  
Vol 26 (1) ◽  
Author(s):  
Giovanni Cancino Escalante ◽  
Susan Cancino ◽  
Daniel Francisco Cancino Ricketts

Abstract Chicken meat production is one of the fastest growing industries in Colombia with an average per person consumption of 35.6 kg. Due to the increase in demand and to the growing importance of the chicken meat production to the Colombian economy the objective of the study was to estimate the demand and supply response and the short run elasticities for chicken meat using a two-stage least squares technique for simultaneous equations. Results indicated that chicken meat demand was responsive to changes in own and beef prices as well as income. The direction of the independent variables were as expected, with the exception of pork prices. The response of chicken meat supply to own-price changes was found to be inelastic in the short run. Chicken feed and the exchange rate elasticities did not present a great impact on the percentage changes of the quantity offered of chicken meat. The proposed model can be useful for producers, chicken meat companies managers and policymakers as understanding the factors that affect the chicken market can lead to optimal managerial and financial decisions


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