Table 2.

Descriptive statistics and zero-order correlation of individualism and number of co-authors.

	M ± SD	1	2	3	4
1 GDP	31.332 ± 10.074
2 Gini coefficient	32.71 ± 4.55	−0.521*
3 R&D expenditures	2.27 ± 0.90	0.329	−0.230
4 Individualism	65.81 ± 20.73	0.594**	−0.170	−0.129
5 Mean co-authors	5.56 ± 1.80	−0.087	−0.018	0.230	−0.529*
6 Median co-authors	3.43 ± 1.66	−0.076	−0.035	0.407	−0.651**

GDP, GDP per capita; R&D, gross domestic expenditure on R&D 2002–2011;

^*p < 0.05,

^**p < 0.01.