Details about Sophia du Plessis

Access statistics for papers by Sophia du Plessis.

Last updated 2026-05-04. Update your information in the RePEc Author Service.

Short-id: pdu244

Working Papers

2025

1. The Persistence of Female Political Power in Africa
   NBER Working Papers, National Bureau of Economic Research, Inc

2021

2. Better enforcement is essential, but may be inadequate: Findings of a survey on the factors affecting payment of speeding fines in Cape Town, South Africa
   Working Papers, Stellenbosch University, Department of Economics View citations (1)
   See also Journal Article Better Enforcement Is Essential, but May Be Inadequate: Findings of a Survey on the Factors Affecting Payment of Speeding Fines in Cape Town, South Africa, Sustainability, MDPI (2021) (2021)

2019

3. Improving payment of traffic fines with financial incentives: Discounts versus penalties
   Working Papers, Stellenbosch University, Department of Economics View citations (2)
4. The limits of laws: traffic law enforcement in South Africa
   Working Papers, Stellenbosch University, Department of Economics View citations (3)

2018

5. Taxpayers’ behavioural responses to Voluntary Disclosure Programmes: evidence from South Africa
   ERSA Working Paper Series, Economic Research Southern Africa
6. Which comes first: good governance or prosperity? A historical experiment from the South African Republic and the Orange Free State
   Working Papers, Stellenbosch University, Department of Economics View citations (2)
   Also in ERSA Working Paper Series, Economic Research Southern Africa (2017)

2014

7. Democratisation in Africa: The Role of Self-Enforcing Constitutional Rules
   ERSA Working Paper Series, Economic Research Southern Africa
8. Slave prices and productivity at the Cape of Good Hope from 1700 to 1725: did all settler farmers profit from the trade?
   Working Papers, Stellenbosch University, Department of Economics

2013

9. Slave Prices and Productivity in the 18th Century at the Cape of Good Hope: The Winners and Losers from the Trade
   ERSA Working Paper Series, Economic Research Southern Africa

2012

10. Happy in the service of the Company: the purchasing power of VOC salaries at the Cape in the 18th century
    Working Papers, Stellenbosch University, Department of Economics View citations (21)
    See also Journal Article Happy in the Service of the Company: The Purchasing Power of VOC Salaries at the Cape in the 18th Century, Economic History of Developing Regions, Taylor & Francis Journals (2012) View citations (15) (2012)

2009

11. A new and direct test of the ‘gender bias’ in multiple-choice questions
    Working Papers, Stellenbosch University, Department of Economics

2007

12. Democracy and the feedback mechanism in Botswana
    Working Papers, Stellenbosch University, Department of Economics

2006

13. Institutions and Institutional Change in Zambia
    Working Papers, Stellenbosch University, Department of Economics View citations (1)

Journal Articles

2021

1. Better Enforcement Is Essential, but May Be Inadequate: Findings of a Survey on the Factors Affecting Payment of Speeding Fines in Cape Town, South Africa
   Sustainability, 2021, 13, (9), 1-16
   See also Working Paper Better enforcement is essential, but may be inadequate: Findings of a survey on the factors affecting payment of speeding fines in Cape Town, South Africa, Working Papers (2021) View citations (1) (2021)
2. De jure property rights and state capacity: evidence from land specification in the Boer Republics
   Journal of Institutional Economics, 2021, 17, (5), 764-780

2015

3. Slave prices and productivity at the Cape of Good Hope from 1700 to 1725: Did everyone win from the trade?
   Cliometrica, Journal of Historical Economics and Econometric History, 2015, 9, (3), 289-330 View citations (7)

2013

4. THE WEALTH OF CAPE COLONY WIDOWS: INHERITANCE LAWS AND INVESTMENT RESPONSES FOLLOWING MALE DEATH IN THE 17TH AND 18TH CENTURIES
   Economic History of Developing Regions, 2013, 28, (1), 87-108 View citations (2)

2012

5. Happy in the Service of the Company: The Purchasing Power of VOC Salaries at the Cape in the 18th Century
   Economic History of Developing Regions, 2012, 27, (1), 125-149 View citations (15)
   See also Working Paper Happy in the service of the Company: the purchasing power of VOC salaries at the Cape in the 18th century, Working Papers (2012) View citations (21) (2012)

2006

6. Explanations for Zambia's economic decline
   Development Southern Africa, 2006, 23, (3), 351-369 View citations (4)

2005

7. REGULATORY TAKINGS
   South African Journal of Economics, 2005, 73, (1), 121-132