Table 5. Means of the 5 factors of the MCQ-Af27 between age 13 and 17, N = 214.

	Means 13 to 17	Means at 13	Means at 16	Means at 17	t(61)	t(64)	p
MCpos	11.33	10.22	12.18	11.38	2.05		0.045
MCneg-Q2	10.11	8.67	11.09	9.94	2.42		0.019
Confidence-Q14	8.2	7.11	8.58	8.58	1.54		0.129
Control	11.68	11.5	12.04	11.69	0.60		0.55
Conscience-Q12	12.96	11.56	13.31	13.75		2.3	0.025
MCQ-Af27	54.28	49.06	57.2	55.33	2.72		0.008

MCpos = positive metacognitive beliefs; MCneg = negative metacognitive beliefs. In grey: significant differences.