Fig. 2From: Long drives and red tape: mapping rural veteran access to primary care using causal-loop diagrammingCausal-loop diagram notation. In causal-loop diagrams, causal links between variables have a positive or negative valence corresponding to whether the second variable increases or decreases in a way that is the same as or opposite to the first variable. Feedback loops are configurations of causal links that display circular logic and can be reinforcing (exponential behavior) or balancing (trend toward a set point)Back to article page