Table 1. Mixed Effects Models for production data (Age 3-4; Age 5-6).

				Age 3–4						Age 5–6
Fixed effects	Beta (â)	SE	z value	HPD95 lower	HPD95 upper	p	Beta (â)	SE	z value	HPD95 lower	HPD95 upper	p
(Intercept)	4.29	1.90	2.26	0.57	8.01	0.02	6.81	1.84	3.70	3.20	10.42	0.00
Verb Type	−0.81	0.68	−1.19	−2.14	0.52	0.23	−0.78	0.67	−1.18	−2.09	0.53	0.24
Freq of un- form	0.25	0.12	2.05	0.01	0.49	0.04	0.42	0.13	3.13	0.17	0.67	0.00
Reversibility	−0.35	0.32	−1.09	−0.98	0.28	0.28	−0.87	0.32	−2.70	−1.50	−0.24	0.01
PreEmption	−0.16	0.08	−2.01	−0.32	0.00	0.04	-0.19	0.08	−2.53	−0.35	−0.03	0.01
Entrenchment	−0.33	0.12	−2.76	-0.57	−0.09	0.01	−0.21	0.13	−1.57	−0.46	0.04	0.12
Semantics	0.34	0.25	1.35	−0.15	0.83	0.18	0.37	0.28	1.34	−0.18	0.92	0.18