Causal Loop Diagram - the Department of Computer Science!

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Example Vicious/Virtuous Cycles• Positive (reinforcing) feedback can lead toextremely rapid changes in situation+# of Infectives# New Infections+Weight Perceivedas Normal+Individual TargetWeight+++CustomersWord ofMouth Sales+Prevalence ofObesity++Prevalence ofGDMPrevalence ofMacrosomic Infants++Mean Weight inPopulation+# of ActivatedMemory Cells# of ClonalExpansions+
Example “Balancing Loops”• Balancing loops tend to be self-regulating# New Infections+-# of SusceptiblesAdaptation++PolicyReevaluationPolicyEffectiveness--Food IngestedHunger+Mistakes-+Learning fromMistakes
Page 5 and 6: Consider A → B• We are reasonin
Page 7 and 8: Tips• Variables will often be nou
Page 9 and 10: Example 2• Ambiguous Link: Someti
Page 11: Feedback Loops• Loops in a causal
Page 15 and 16: Best Practice:Indicating (Pronounce
Page 17 and 18: Classic FeedbacksSusceptibles -+Con
Page 19 and 20: Example Vicious/Virtuous Cycles•
Page 21 and 22: More Elaborate DiagramsKaranfil, 20
Page 23 and 24: Causal Loop Structure :Dynamic Impl
Page 25 and 26: CL Dynamics: Goal Seeking(Balancing
Page 27 and 28: Growth and Plateau• Loop structur
Page 29 and 30: Measles & Mumps in SKDepartment of
Page 31 and 32: Three STIs: Test Volume vs CaseCoun
Page 33 and 34: Cases and Contact Tracing6000500040
Page 35 and 36: Broadening the Model Boundaries:End
Page 37 and 38: Examples of Policy Resistance- Cutt
Page 39 and 40: Slides Adapted from External Source
Page 41 and 42: Unclear VariablesVariables Lacking
Page 43 and 44: Refining a Diagram• It takes time
Page 45 and 46: Polarity• A → + B Does not mean
Page 47 and 48: Critical: Notion of “Increase”
Page 49 and 50: Artifactual Loop 2
Page 51 and 52: State of the System: Stocks(Levels,
Page 53 and 54: Changes to State: Flows (“Fluxes
Page 55 and 56: Flows 2• May be measured by total
Page 57 and 58: 109.5Flow Impact on StockFlow2,0001
Page 59 and 60: Delayed Impact
Page 61: Slides Adapted from External Source

Causal Loop Diagram - the Department of Computer Science!

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