1. Public Policy Modeling Examples of Causal Loop Diagrams Tuesday, June 12, 2018
Hun Myoung Park, Ph.D.
Public Management & Policy Analysis Program Graduate School of International Relations

2. Software for CLD Vensim (https://vensim.com/)
iThink (
STELLA (
Powersim (
Anylogic (
You may also try LibreOffice Draw or Microsoft Visio 2

3. Illustration of Causal Maps
Impact of DDT on Malaria
Economy and population
Electrical energy system
Corruption system
Common pool resources system
Premarital Teenage Pregnancy & Motherhood

4. Impact of DDT on Malaria 1

5. Impact of DDT on Malaria 2

6. Impact of DDT on Malaria 3

8. Impact of DDT on Malaria 5

9. Impact of DDT on Malaria 6
Loop 1 (Balancing): DDT Use→Mosquito →Disease
Loop 2 (Reinforcing): DDT Use→DDT in Breast Milk→Disease
Loop 3 (Reinforcing): DDT Use→DDT in Gecko→Cat→Rat→Disease
Loop 4 (Reinforcing): DDT Use→Wasp →Caterpillar→Thatch Roof→Disease

10. Economy and Population 1
Sherwood (2002, pp )

11. Economy and Population 2
Sherwood (2002, pp )

12. Economy and Population 3
Sherwood (2002, pp )

13. Economy and Population 4
Sherwood (2002, pp )

14. Economy and Population 5
Sherwood (2002, pp )

15. Economy and Population 6

16. Economy and Population 7

17. Electrical Energy System

18. Corruption System

19. Common Pool Resources

20. Premarital Teenage Pregnancy & Motherhood20

21. Opium Market System

22. References
Anderson, Virginia, and Lauren Johnson Systems Thinking Basics: From Concepts to Causal Loops. Waltham, MA: Pegasus Communications.
Sherwood, Dennis Seeing the Forest for the Trees: A Manager. London: Nicholas Brealey Pub.
Weick, Karl E The Social Psychology of Organizing. 2nd ed. Reading, MA: Addison-Wesley Pub. Co.