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Across 3. a border enclosing the parts of system struc-ture needed to generate the behavior of interest 4. the generation of the behavior of a system with a formal computer model 5. one of the most fundamental approach to decision making 6. Testing of model behaviour and sensitivity to perturbations 9. a feedback loop in which the resultant effect of thecausal links over time limits or constrains the movement of variables 10. an arrow in a causal loop diagram or system structure diagram that describes a relationship between two variables with the direction of causality 12. Postulation of detailed structure-selecting levels, selecting rates and describing their determinants 14. laid down the foundations of the discipline and later defined the methods and techniques associated with this methodology 17. constant factors in relationships in a model 20. the main theory which system dynamics is based 21. a causal relationship between two variables in which the change in the impacted variable is not directly proportional to the change in the impacting variable 23. analysis used to determine how responsive model outputs are to changes in specific parameters, or policies or structures 24. The process of understanding how things influence one another within a whole. 25. An arrangement of feedback that leads to balancing or goal-seeking behaviour

Down 1. “Dynamical systems theory is an area of mathematics used to describe the behavior of complex dynamical systems, usually by employing differential equations or difference equations. 2. represents theoretical knowledge or structure of the model highlighting the relationship between variables, their polarity and direction of influence 7. a behavior mode in which a system variable increases beyond the equilibrium condition, often destroying its ability to sustain itself, and then collapses to lower equilibrium conditions 8. filtering out short-term noise-like fluctuations in a time series to detect or reveal underlying, significant patterns 11. a computer-based modelling approach that employs computer simulation and system thinking methods 13. Stocks and flows of people, energy, money etc Time delays, resources, external environment 15. a tool that represents closed loops of cause–effect linkages as a diagram intended to capture how the system variables interrelate and how external variables impact them 16. Description of the time development of interest (the reference mode) and defining the time horizon and the range of time constants in the model 18. Many obvious solutions to problems fail or actually worsen the situation. 19. cause and effect are distant in time and space 22. a process whereby an initial cause ripples through a chain of causation ultimately to reaffect itself