 Conceptual modelling was developed in response
to the failure of quantitative systems analysis to
cope with the problems. Different methods have
been developed to address these problems.
 Causal loop diagrams provide an example of a
qualitative systems tool. The modelling process
starts by identifying variables and causal links
between them and then proceeds with
identification of feedback loops, such as closed
chains of causal connections. This language was
developed initially to help people identify circular
patterns that are often hidden by our default
assumption that all causation is linear.
 Balancing feedback loops are equilibrating or
goal-seeking structures in systems and are
both sources of stability and sources of
resistance to change.
 Balancing feedback loop guarantees system
resilience.
 Reinforcing feedback loops are selfenhancing,
leading to exponential growth or
to runaway collapses over time.
 Reinforcing feedback loop is central driver of
growth in an economy.
 It could lead to vicious circle.
 Like with epidemy
 Microsoft has a special software for diagrams
- MS Visio. You can create diagrams there
and than import them to Word (or any other
program).
You can also use some free alternatives to
Visio:
http://www.lucidchart.com
http://dia-installer.de/index.html.en
 http://cmap.ihmc.us/
 http://dia-installer.de/