Table 3.

Descriptive statistics of child and mother play (durations in s)

	Child Solitary Play				Child Collaborative Play				Maternal Play
	Down syndrome		Typical development		Down syndrome		Typical development		Down syndrome		Typical development
	M	SD	M	SD	M	SD	M	SD	M	SD	M	SD
Exploratory play	30.43	41.32	104.93	80.19	54.57	49.42	82.72	58.58	52.29	40.80	80.05	49.13
1. Unitary functional activity	9.76	18.67	38.14	37.08	27.57	25.75	27.34	25.34	37.43	27.30	32.25	31.39
2. Inappropriate combinatorial activity	2.14	5.17	9.59	15.75	3.24	10.50	4.16	9.27	0.14	0.65	3.65	10.88
3. Appropriate combinatorial activity	3.95	11.63	42.70	75.00	16.14	33.90	35.68	50.17	14.62	29.11	42.91	44.52
4. Transitional play	14.57	25.93	14.50	22.56	7.62	17.11	12.14	23.39	0.10	0.44	1.24	4.37
Symbolic play	29.67	32.22	29.75	35.00	43.86	56.76	59.41	44.38	50.86	57.03	30.87	35.21
5. Self-directed pretense	15.76	23.93	14.25	17.10	18.33	47.97	21.36	27.31	2.95	6.02	2.31	5.72
6. Other-directed pretense	7.52	18.00	7.84	17.05	4.52	9.15	9.25	11.80	23.81	46.37	14.35	19.36
7. Sequential pretense	6.19	14.56	7.66	22.13	20.52	30.79	28.57	38.13	22.38	35.45	13.56	23.63
8. Substitution pretense	.19	0.87	.00	.00	0.48	1.54	0.25	1.20	1.71	4.31	.65	3.70
Unengagement (Default)	539.89	83.11	456.36	98.14	501.63	87.41	457.81	87.26	496.84	76.35	489.06	73.08