Table 3.

Means, standard deviations, and effect sizes for OOP from low and high group scores on externalizing problems.

Variable	Levene's test		Low scores on externalizing problems N = 190		High scores on externalizing problems N = 212		Statistical significance
	F	p	M	SD	M	SD	t	d.f.	p	d
OOP	36.11	< 0.001	2.14	5.08	4.89	7.50	−4.33	373.12	< 0.001	−0.43

OOP, other-oriented perfectionism.