The article refers to the new Synthetic Efficiency Indicator for Economic Growth (SEI-EG) proposed in an earlier publication. Research from 2016-2018 in 11 EU countries revealed small nations were notably more effective at sustainable growth than their larger counterparts. This prompted the...

We show that in a fully integrated economy, in which there is free mobility of goods and factors, each member’s share of total output will equal its shares of total stocks of productive factors (i.e., physical and human capital). We label this result the equal-share relationship. This...