Table 3.

Descriptive statistics, intraclass correlation, reliability and correlations at the within and between level for all major variables.

	Variable	M	SD	ICC1	ICC2	ω	1	2	3	4	5	6	7	8	9	10	11
1	Teaching for relevance	4.033	1.683	0.545	0.957	0.889		0.946	0.960	-0.495	0.931	0.917	0.874	0.944	0.852	0.409	0.232
2	Acknowledge negative feelings	3.449	1.772	0.467	0.942	0.892	0.684		0.961	-0.531	0.966	0.965	0.809	0.964	0.911	0.443	0.284
3	Participation encouragement	4.436	1.655	0.385	0.921	0.828	0.618	0.598		-0.563	0.935	0.939	0.852	0.958	0.846	0.405	0.181
4	Controlling language	2.732	1.575	0.416	0.930	0.827	-0.147	-0.105	-0.123		-0.469	-0.518	-0.453	-0.602	-0.600	-0.335	0.015
5	Optimal challenge	4.123	1.736	0.472	0.943	0.871	0.532	0.551	0.633	-0.171		0.942	0.847	0.942	0.842	0.434	0.209
6	Focus on the process	4.447	1.732	0.342	0.905	0.804	0.470	0.468	0.544	-0.140	0.569		0.804	0.949	0.846	0.487	0.361
7	Class structure	5.181	1.668	0.400	0.926	0.908	0.519	0.436	0.566	-0.221	0.548	0.571		0.855	0.728	0.327	0.121
8	Positive feedback	4.534	1.706	0.387	0.921	0.919	0.669	0.661	0.721	-0.224	0.687	0.648	0.652		0.923	0.369	0.200
9	Caring	3.907	1.663	0.423	0.931	0.902	0.660	0.750	0.670	-0.138	0.610	0.526	0.521	0.739		0.333	0.242
10	Effort regulation	4.636	1.378	0.161	0.782	0.728	0.199	0.191	0.220	-0.119	0.288	0.209	0.264	0.285	0.294		0.481
11	Math grades	5.217	2.212	0.084	–	–	0.099	0.113	0.113	-0.091	0.257	0.199	0.158	0.183	0.167	0.467

ICC, intraclass correlation; ω, McDonald’s omega; Lower diagonal triangle: within level correlations; Upper diagonal triangle: between level correlations; Upper diagonal triangle: correlations at the class level.