TABLE 1.

Means (M), Standard Deviation (SD), Skewness (S), Kurtosis (K), Alpha (α) and Omega (ω). Reliability Indexes, and Correlations for the study variables.

	M	SD	S	K	α	ω	1	2	3
(1) Basic psychological needs at school	5.710	1.018	−1.068	1.360	0.790	0.798	–
(2) Academic psychological capital	4.417	1.029	−0.595	0.187	0.910	0.912	0.612∗∗	–
(3) Academic performance	5.213	0.808	−0.143	−0.668	0.886	0.888	0.295∗∗	0.342∗∗	–

^∗∗p < 0.001.