Table 5.

Measures of cognition and behaviors in the PRT and control group in baseline and intervention phases

	PRT	Control	Statistics
	M ± SD
Social & communicative difficulties
Baseline	27.93 ± 3.95	29.13 ± 3.04	Group: F(1, 28) = 2.85, p = .10, η2 = 0.92
Intervention	23.13 ± 4.51	26.47 ± 3.23	Phase: F(1, 28) = 245.27, p < .001, η2 = 0.90
			Group × Phase: F(1, 28) = 20.02, p < .001, η2 = 0.42
Cognition
Baseline	35.60 ± 14.57	29.47 ± 14.48	Group: F(1, 28) = 4.26, p = .048, η2 = 0.13
Intervention	46.73 ± 12.33	32.00 ± 14.86	Phase: F(1, 28) = 49.19, p =  < .001, η2 = 0.64
			Group × Phase: F(1, 28) = 19.48, p =  < .001, η2 = 0.41
Fine motor skills
Baseline	30.20 ± 8.60	31.87 ± 4.07	Group: F(1, 28) = 0.001, p = .97, η2 = 0.00
Intervention	35.47 ± 4.82	33.67 ± 3.54	Phase: F(1, 28) = 31.46, p =  < .001, η2 = 0.53
			Group × Phase: F(1, 28) = 7.58, p = .01, η2 = 0.21
Gross motor skills
Baseline	24.33 ± 4.89	25.87 ± 4.50	Group: F(1, 28) = 0.6, p = .81, η2 = 0.002
Intervention	28.00 ± 2.62	27.13 ± 3.29	Phase: F(1, 28) = 29.33, p =  < .001, η2 = 0.51
			Group × Phase: F(1, 28) = 6.94, p = .01, η2 = 0.20
Imitation
Baseline	13.00 ± 4.58	13.27 ± 3.71	Group: F(1, 28) = 0.81, p = .38, η2 = 0.03
Intervention	16.67 ± 3.37	14.00 ± 3.59	Phase: F(1, 28) = 24.45, p =  < .001, η2 = 0.47
			Group × Phase: F(1, 28) = 10.87, p = .003, η2 = 0.28
Adaptive behaviors
Baseline	39.47 ± 14.06	30.47 ± 13.87	Group: F(1, 28) = 5.62, p = .03, η2 = 0.17
Intervention	54.93 ± 14.89	39.53 ± 15.24	Phase: F(1, 28) = 90.89, p =  < .001, η2 = 0.76
			Group × Phase: F(1, 28) = 6.19, p = .02, η2 = 0.42

The intervention assessment occurred in Week 10. Social and communicative difficulties were measured using the Chinese version of the SCQ. Cognition, fine motor skills, gross motor skills, imitation, and adaptive behaviors were measured using the CPEP-3

PRT Pivotal response training