Table 2.

Summary of hierarchical regression analyses for anxiety measures predicting extinction difference scores.

Predictors	CS+ − CS− Early Extinction						CS+ − CS− Late Extinction						CS− Early Extinction − CS− Late Extinction
	B	SE B	β	R2	F	Δ R2	B	SE B	β	R2	F	Δ R2	B	SE B	β	R2	F	Δ R2
Step 1				0.074	1.232	0.074				0.061	1.008	0.061				0.089	1.7	0.089
STAI	0.003	0.003	−0.39				0.006	0.004	0.322				0.007	0.004	0.439
PSWQ	−0.006	0.004	0.258				−0.002	0.004	−0.125				−0.005	0.003	−0.377
Step 2				0.12	1.571	0.046				0.073	0.386	0.012				0.298	10.124	0.209*
STAI	−0.001	0.006	−0.086				0.003	0.006	0.167				−0.002	0.005	−0.123
PSWQ	0.003	0.003	0.255				−0.002	0.004	−0.124				−0.006	0.003	−0.45
IU	−0.003	0.002	−0.371				0.002	0.003	0.188				0.006	0.002	0.77

Note: * p <  0.01.