Models	Variables	Hierarchical Regression Description Statistics				Description and Statistics of Variables
Models	Variables	R	R²	df	F	B	Standard Error	Beta	t
1		0.437	0.191	1	83.563**
	(constant)					1.816	0.206		8.810**
	CHB					0.488	0.053	0.437	9.141**
2		0.658	0.433	2	134.763**
	(constant)					1.860	0.173		10.762**
	CHB					0.323	0.047	0.289	6.901**
	AA					0.046	0.004	0.514	12.274**
3		0.689	0.475	3	106.033**
	(constant)					1.032	0.229		4.515**
	CHB					0.546	0.062	0.488	8.842**
	AA					0.144	0.019	1.599	7.646**
	CHB×AA					−0.025	0.005	−1.177	−5.289**