TABLE 3.

Population-level effects for Bayesian linear models.

Model			Estimate	Est. error	1–95% CI	u-95% CI	Rhat	Bulk_ESS	Tail_ESS
1	Age to predict verb/utterance ratio	Intercept	–1.85	0.08	–2.03	–1.71	1.00	2233	2502
		Child’s age	2.87	2.78	–0.63	9.86	1.00	1812	1977
		(Child’s age)∧2	198.38	23.16	141.12	230.78	1.00	1783	1998
2	Age and verb/utterance ratio to predict medial verbs/verbs ratio	Intercept	–2.68	0.15	–2.98	–2.37	1.00	2753	3198
		Child’s age	–1.13	1.77	–5.73	1.38	1.00	3050	1954
		(Child’s age)∧2	–0.48	3.23	–4.16	2.40	1.00	3184	1471
		Verbs per utterance	2.19	0.25	1.74	2.72	1.00	1622	2733
		(Verbs per utterance)∧2	–0.59	0.09	–0.77		1.00	1744	2783
3	Age and verb/utterance ratio to predict DS marking/total medial verbs	Intercept	–4.08	0.61	–5.33	–2.91	1.00	2965	3360
		Child’s age	49.17	8.53	32.55	66.03	1.00	2931	3325
		Verbs per utterance	–0.90	0.19	–1.26	–0.54	1.00	3483	3495
4	Command/desire context to predict root medial clauses	Intercept	–2.29	0.15	–2.59	–2.01	1.00	3461	3559
		Command context	2.48	0.25	2.00	2.97	1.00	4174	4192
5	Addition of mother’s verb/utterance ratio to Model 1	Intercept	–1.81	0.06	–1.92	–1.70	1.00	7588	6279
		Child’s age	0.21	1.28	–2.27	2.86	1.00	3923	2929
		(Child’s age)∧2	220.95	13.01	194.69	245.92	1.00	3937	3378
		Mother’s verb/utt ratio	0.15	0.02	0.10	0.20	1.00	7087	5022