Table 3.

Linear mixed-effects model for item-level confidence judgments.

Fixed effects	b (SE)	95%CI	t-value	df	Random effects	Variance
Constant	1.28 (1.45)	[−1.56, 4.11]	0.88	107.31	Subject (Intercept)	2.37
Ratio	3.93 (0.34)	[3.26, 4.60]	11.54***	48.00	Item (Intercept)	0.38
MA	−0.01 (0.19)	[−0.37, 0.36]	−0.05	91.00
Gender	0.81 (0.35)	[0.12, 1.49]	2.32*	91.00
ANS Passive Performance	−0.22 (2.20)	[−4.54, 4.09]	−0.10	91.00
SAT math	−0.10 (0.17)	[−0.44, 0.24]	−0.57	91.00
General Anxiety	−0.25 (0.18)	[−0.60, 0.009]	−1.45	91.00

Non-males were the reference group. MA, mean-centered math anxiety. ^*p < 0.05. ^***p < 0.001.