Transcript Causal Loop Diagram Video Slides

Causal Loop Diagram
Relationship Modeling
Introduction
Relationship Modeling
• Capture understanding
• Overcome individual limitations
• Qualitative in nature
Intent of this Video
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Understand elements
Alternative notation
Notation short comings
Preferred notation
Develop a Causal Loop Diagram
Elements
• Entity – non negative noun or noun phrase
• Influence – relationship between entities
• Simplest CLD – 2 entities + 1 influence
Notation
Notation Resolution
• Variables
• Instantaneous & Accumulators (Stock)
• Differentiate the two
• Rectangles for Stocks
Causal Loop Diagram
Loops & Loops
Growth Loop
Goal Seeking Loop
Emergence
• Properties arising from interactions
Additional Thoughts
• Telling Loops - count the “-” signs
• Odd number is a balancing loop
• Even number is a reinforcing loop
• Delay – use || or delay on the line
• Qualitative only, not quantitative
• See Stock & Flow Diagram Video
Systems Thinking World
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