2015年-世界发展银行全球_No_Condition_is_Permanent___Middle_Class_in_Nigeria_in_the_Last_Decade_39页_1mb

Summary: Middle Class in Nigeria in the Last Decade

Core Content

This paper explores the evolution of the middle class in Nigeria over the past decade, using a quantitative approach to estimate its size and characteristics. It builds on a framework developed for defining the middle class in terms of economic vulnerability, particularly in developing countries. The study also compares Nigeria's middle class profile with that of other developing nations, highlighting the unique socio-economic dynamics of the country.

Main Viewpoints

• Middle Class Definition: The middle class is defined as households with a low probability (less than 10%) of falling into poverty. This approach focuses on economic security and vulnerability rather than traditional income or occupational criteria.
• Threshold Estimation: Using the General Household Survey Panel (GHS-Panel), the paper estimates the middle class threshold in Nigeria as 378.39 Naira per capita per day (2010 PPP).
• Poverty and Middle Class Trends: Between 2003 and 2013, Nigeria saw a reduction in poverty from 45% to 33%, and a rise in the middle class from 13% to 19%.
• Vulnerability of Middle Class: Despite the growth in the middle class, a large portion of the population remains vulnerable to poverty, indicating that the middle class is not a stable or secure group in Nigeria.
• Comparative Context: The middle class in Latin America is often seen as a privilege, while in developed countries, it is more representative and plays a central role in shaping social, economic, and political structures. In Nigeria, the middle class is still relatively small and lacks the social and political influence seen in developed countries.
• Methodology: The paper employs a generalized maximum entropy (GME) method to estimate the middle class profile, which is more robust than traditional methods like logistic regression or ordinary least squares (OLS).

Key Information

• Data Sources: The study uses the General Household Survey Panel (GHS-Panel) and the Harmonized Nigeria Living Standard Survey (HNLSS). The GHS-Panel is a nationally representative survey of 5,000 households, while the HNLSS is used to estimate middle class size in 2003/2004.
• Poverty Line: A new poverty line based on the GHS-Panel is constructed at 180 Naira per capita per day (2010 PPP), which corresponds to 1.4 USD per capita per day.
• Middle Class Profile: The paper defines three groups:
  • Poor: Below the official poverty line.
  • Vulnerable: Above the poverty line but with a high probability of falling into poverty.
  • Middle Class: Above the 10% poverty vulnerability threshold.
• Economic and Social Changes: The Nigerian middle class has grown due to economic growth, urbanization, and increased employment in the private sector. However, this growth is not uniform, and many members of the middle class remain economically insecure.
• Consumption Patterns: There has been a noticeable shift in consumption behavior, with more Nigerians adopting Western-style consumer habits, including shopping at malls and purchasing branded goods. This reflects the influence of globalization and the emergence of a more affluent lifestyle.
• Criticisms: Some scholars argue that the Nigerian middle class is still primarily a consuming class, not a producing or entrepreneurial class, and that it is not as economically or politically influential as in developed countries.

Methodological Innovation

• The paper is the first rigorous quantitative study on the Nigerian middle class.
• It uses the Vulnerability Approach to Middle Class (VAMC), which is residual-based on poverty vulnerability analysis.
• It applies generalized maximum entropy (GME) to improve the econometric robustness of the model.
• It estimates a comparable consumption distribution for the early 2000s and recent years using survey-to-survey imputation.

Conclusion

• The Nigerian middle class has grown significantly in the last decade, but it remains heterogeneous and vulnerable.
• The study underscores the need for a more systematic and quantitative approach to understanding the middle class in developing countries.
• It also highlights the potential for the middle class to drive economic and political change in Nigeria, provided it becomes more productive and secure.

Structure

• Section I: Introduction – Sets the context of middle class analysis in developing countries and outlines the paper's objectives.
• Section II: Defining the Middle Class in Developing Countries – Discusses the challenges in defining the middle class in Nigeria and other SSA countries, and presents the VAMC framework.
• Section III: Data and Methodology – Describes the data sources and the use of GME for estimating middle class size and profile.
• Section IV: Results – Presents the findings on poverty and middle class trends, and the characteristics of the middle class.
• Section V: Conclusion – Summarizes the main findings and implications for policy and development in Nigeria.