Table 2.

Descriptive statistics of the data for the key study variables.

Variables	Time	M	SD	Skewness	Kurtosis	Shapiro–Wilk Value of p
Inattention	Pretest	2.40	0.21	0.002	−1.165	>0.05
	Posttest	2.00	0.32	−0.211	−0.386	>0.05
Hyperactivity/impulsivity	Pretest	2.39	0.23	−0.037	−1.064	>0.05
	Posttest	1.99	0.34	0.195	−1.316	>0.05
ODD	Pretest	2.34	0.18	−0.042	−0.919	>0.05
	Posttest	1.97	0.29	0.293	−1.182	>0.05

ODD, oppositional defiant disorder.