Table 2.

LMM estimates of fixed effects (upper part) and estimates of variance (lower part) for first fixation and single fixation duration and gaze duration.

	First fixation duration			Single fixation duration			Gaze duration
Fixed effects	b	SE	|t|	b	SE	|t|	b	SE	|t|
Intercept	6.045	0.046	132.54	6.277	0.065	96.68	6.792	0.070	97.26
Salience	0.063	0.023	2.67	0.056	0.032	1.74	0.037	0.024	1.53
Grade	–0.227	0.031	7.41	–0.303	0.040	7.64	–0.404	0.044	9.23
Salience × grade	0.012	0.014	0.81	0.039	0.018	2.21	0.030	0.015	2.01
Random effects	Variance	SD		Variance	SD		Variance	SD
Intercept: Item	0.007	0.08		0.014	0.12		0.023	0.15
Intercept: Subject	0.054	0.23		0.121	0.35		0.146	0.38
Salience	0.015	0.12		0.030	0.17		0.008	0.09
Grade	0.002	0.04		0.005	0.07		0.005	0.07
Salience × grade	0.004	0.06		0.006	0.08		0.002	0.05
Residual	0.145	0.38		0.073	0.27		0.223	0.47

Model: log(duration) ∼ salience + grade + salience:grade + (1 + salience + grade + salience:grade | subject) + (1 | item).