Table 2.

Results of Hierarchical Regression Analyses for Work Behavior Inventory Skill Areas of Social Skills and Work Quality on Weeks Worked

Model 1 With WBI Social Skills
Predictor	β	t-value	P-Value	R 2
Block 1				.001
Cognition	.021	0.111	.912
Overall symptom severity	.025	0.132	.896
Work history	−.001	−0.007	.995
Block 2				.184
Cognition	−.029	−0.161	.874
Overall symptom severity	.232	1.199	.240
Work history	−.117	−0.656	.517
WBI Social Skills	.695	2.800	.018
Model 2 With WBI Work Quality
Predictor	β	t-Value	P-Value	R 2
Block 1				.001
Cognition	.021	0.111	.912
Overall symptom severity	.025	0.132	.896
Work history	−.001	−0.007	.995
Block 2				.045
Cognition	−.026	−0.134	.894
Overall symptom severity	.097	0.487	.630
Work history	−.065	−0.333	.741
WBI Work Quality	.238	1.136	.265

Note: β, standardized beta; WBI, Work Behavior Inventory. Block 2 included the independent variables retained from the previous regression step plus the independent variables added to the model to examine amount of additional variance explained.