The complexity of sustainable development is related to the connectivity of complex subsystems - or sustainable dimensions - such as environment, economy, society, governmental systems and individuals. The psychological dimension lacks good indicators. This article proposes the Losada Line (positivity/negativity ratio) as a psychological indicator for sustainable development. This measure is based on complexity theory, nonlinear dynamics and the mathematical-psychological model of Meta Learning
Sustainable development; Psychological indicators; Positivity/negativity ratio; Losada Line; Meta Learning
