Table 1.

Symbols used in the causal loop diagram.

Symbols	Illustrations	Mathematics
	“If X increases, then Y increases above the original value.” “In the case of accumulation, X adds to Y” (Roubík et al., 2020).	$\frac{\delta y}{\delta x}>0$ In the case of accumulations, $Y=\underset{T_0}{\overset{T}{\int }}\left(X+\dots \right)dt+Y_{T_0}$
	“If X increases, then Y decreases below the original value.” “In the case of accumulation, X is subtracted from Y” (Roubík et al., 2020).	$\frac{\delta y}{\delta x}<0$ In the case of accumulations, $Y=\underset{T_0}{\overset{T}{\int }}\left(-X+\dots \right)dt+Y_{T_0}$
	Delay mark