eTable 3. Mean Z-scores of the pre–follow-up differences in primary and secondary outcome tests in the intervention and control groups.

n=215	Wally	PSBQ			C-TRF
	All items	Prosocial behavior	Externalizing disorder	Total problem behavior	Internalizing disorder	Externalizing disorder	Total problem behavior
M (SD)
Intervention group	1.13 (1.05)	0.07 (1.28)	−0.25 (1.03)	−0.52 (1.31)	−0.45 (1.15)	−0.22 (0.66)	−0.38 (0.83)
Control group	0.36 (1.03)	−0.5 (1.63)	−0.06 (0.78)	−0.21 (0.89)	−0.12 (0.46)	−0.06 (0.51)	−0.11 (0.41)

PSBQ, Preschool Social Behavior Questionnaire; C-TRF, Caregiver–Teacher Report Form; M, mean; SD, standard deviation