Table 2.

Metacognitive efficiency parameter estimates.

Age group	Group metacognitive efficiency (meta-d’/d’)		Correlation coefficient (mean, 95% HDI⁎)
	Memory (mean, 95% HDI⁎)	perception (mean, 95% HDI⁎)
1	1.04, [0.88, 1.20]	0.48, [0.37, 0.61]	0.67, [0.23, 1.00]
2	1.07, [0.95, 1.21]	0.45, [0.34, 0.57]	0.59, [0.07, 0.99]
3	0.93, [0.77, 1.08]	0.57, [0.45, 0.70]	0.52, [0.08, 0.96]
4	1.08, [0.93, 1.22]	0.55, [0.45, 0.65]	0.40, [−0.16, 0.98]
5	1.16, [1.03, 1.31]	0.70, [0.57, 0.83]	0.67, [0.30, 0.99]
6	1.09, [0.98, 1.20]	0.57, [0.44, 0.71]	0.54, [0.04, 0.99]
All ages	1.07, [1.01, 1.12]	0.55, [0.49, 0.60]	0.60, [0.38, 0.79]

^⁎95% highest-density interval of posterior samples