"There are five concentric circles in EST: microsystems, mesosystems, exosystems, macrosystems and chronosystems, with the individual human positioned in the center of all circles. The identified environments based on the synthesis results were added within each circle, and eventually, the effort led to the ecological systems for constructing entrepreneurship education (Figure 2)."

Source: Lin, J., Qin, J., Lyons, T., Nakajima, H., Kawakatsu, S. and Sekiguchi, T. (2023), "The ecological approach to construct entrepreneurship education: a systematic literature review", Journal of Entrepreneurship in Emerging Economies, Vol. 15 No. 6, pp. 1333-1353. https://doi.org/10.1108/JEEE-12-2021-0455