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1. Fertility, Electricity, and Television: Is there a Link>? Evidence from Pakistan, 1990-2012

Author:
Luca Tasciotti, Farooq Sulehria, and Natascha Wagner
Publication Date:
01-2019
Content Type:
Working Paper
Institution:
School of Oriental and African Studies - University of London
Abstract:
Pakistan has the second highest fertility rate in South Asia with every women giving birth to 3.4 children on average. This paper uses three waves of the Demographic Health Survey data to empirically analyse fertility trends in Pakistan between 1990 and 2013; accounting for wealth and the use of contraceptives and birth spacing, this paper looks at three additional pathways for reducing fertility: (i) electrification, (ii) access to TV and (iii) family planning commercials broadcasted on television. The pooled regression results suggest that the direct effect that the access to electricity has on fertility is limited. In contrast, access to television had a significant effect in reducing fertility rates, especially after the 2000s. To further disentangle the contribution of television to the fertility decline, we assess the role of family planning commercials broadcasted on television. We provide complementary qualitative evidence on the content and evolution of Pakistani soap-operas and we argue that the role models, the typology of households and the messages conveyed by the soap-operas are possible drivers of the fertility decline. We show that a similar conclusion cannot be drawn in the case of radio. Our findings suggest that in one of world’s most populous country access to modern role models via soap-operas might be one of the most powerful fertility- reducing interventions.
Topic:
Health, Electricity, Models, Fertility, and Telecommunications
Political Geography:
Pakistan and Middle East

2. Tourism as a Mechanism in Reducing Income Inequality in Developing Economies

Author:
D. Tan and Risa Morimoto
Publication Date:
12-2019
Content Type:
Working Paper
Institution:
School of Oriental and African Studies - University of London
Abstract:
Although numerous studies have investigated the contribution of tourism to economic growth and development, much less attention has been paid to assessing whether tourism-induced growth and development contribute to the poverty alleviation and income inequality (Kinyondo & Pelizzo, 2015). This study emamines the statistical relationship between tourism activities and a suite of income inequality measures. Using a dynamic fixed country-level effects panel model and bootstrapped standard errors, we find strong evidence showing both tourism dollars and inbound tourism numbers have an adverse effect ion income equality. These findings are supported by the results of the fixed-effects panel and dynamic pooled OLS regressions. The results of this study suggest that more effort should be exerted to develop pro-poor tourism initiatives in order to mitigate the inequitable distribution of the benefits of tourism as well as to reduce possible environmental degradation caused by rural poverty.
Topic:
Development, Tourism, Inequality, Income Inequality, Economic Theory, and Models
Political Geography:
Global Focus

3. Let's Take the Bias Out of Econometrics

Author:
Duo Qin
Publication Date:
12-2016
Content Type:
Working Paper
Institution:
School of Oriental and African Studies - University of London
Abstract:
This study exposes the cognitive flaws of ‘endogeneity bias’. It reviews how conceptualisation of the bias has evolved to embrace all major econometric problems, despite extensive lack of hard evidence. It reveals the crux of the bias – a priori rejection of causal variables as conditionally valid ones, and of the bias correction by consistent estimators – modification of those variables by non-uniquely and non-causally generated regressors. It traces the flaws to misconceived error terms in statistical modelling and estimation consistency. It highlights the need to shake off the bias to let statistical learning play an active and formal role in econometrics.
Topic:
Economics, Economic Theory, Models, and Bias
Political Geography:
Global Focus

4. Compulsory Schooling and the Returns to Education: A Re-examination

Author:
Sophie van Huellen and Duo Qin
Publication Date:
09-2016
Content Type:
Working Paper
Institution:
School of Oriental and African Studies - University of London
Abstract:
We re-examine the effect of compulsory school law on education in the US pioneered by Angrist and Krueger (1991). We show that the standard instrumental variable approach of the education variable not only yields empirically inconsistent estimates, but is conceptually confused. The confusion arises from the rejection of the key causal variable as a valid conditional variable. By route of a causally explicit model design we are able to identify the circumstances under which the formerly rejected variable can yield valid inference values. Our investigation demonstrates the importance of building data-consistent models over estimator choice in successful research designs.
Topic:
Education, Governance, Economic Theory, and Models
Political Geography:
North America and United States of America

5. Inextricability of Autonomy and Confluence in Econometrics

Author:
Duo Qin
Publication Date:
06-2014
Content Type:
Working Paper
Institution:
School of Oriental and African Studies - University of London
Abstract:
This paper examines how ‘confluence’ and ‘autonomy’, two key concepts introduced by Frisch around 1930, have disappeared in econometrics textbooks and why only some fragments of the two have survived mainstream econometrics. It relates the disappearance to the defect in the textbook position of equating a priori theoretical models as correct structural models unequivocally. It shows how the confluence-autonomy pair in unity reflects the complexity of econometricians’ goal to find and verify robust and economically meaningful models out of numerous interdependent variables observable from the real and open world. The complexity deems it essential for applied research to have a set of model design rules combining both a priori substantive reasoning and a posteriori statistical testing. Such a need also puts the task of ensuring an adequately minimum model closure to top priority for applied modellers, a task much more important than the textbook task of parameter estimation.
Topic:
Economics, Intellectual History, Economic Theory, and Models
Political Geography:
Global Focus

6. Modelling Scale Effect in Crosssection Data:The Case of Hedonic Price Regression

Author:
Duo Qin and Yimeng Liu
Publication Date:
09-2013
Content Type:
Working Paper
Institution:
School of Oriental and African Studies - University of London
Abstract:
An innovative and simple experiment with cross-section data ordering is carried out to exploit a basic and common feature between many economic variables – nonlinear scale dependence. The experiment is tried on hedonic price regression models using two data sets, one for automobiles and the other computers. The key findings are: (a) Hedonic price indices can be significantly biased if they are constructed using models which disregard possible nonlinear scale effects latent in random data samples; (b) Scale-based data ordering offers considerable potential to filter such scale-dependent information from cross-section samples; (c) The filtering can be easily carried out by systematic adoption of dynamic modelling methods.
Topic:
Science and Technology, Economic Theory, Models, and Price Regression
Political Geography:
Global Focus