Table 6.

NC Comprehension fixed effects.

Parameter	Estimate	Std. Error	t-value
Intercept	169.3	9.53	17.83**
X position	294.01	97.91	3.00**
Real objects	−1.20	4.02	−0.30
X position × Real objects	204.03	23.48	8.69**
X position2	−306.00	98.40	−3.11**
X position2 × Real objects	−221.67	22.68	−9.78**

^**p < 0.01.