Table 1.

Summary of multiple regression predicting relative left frontal cortical activity during positive picture viewing

Variable	B	SE B	β
Step 1
Writing condition	−0.01	0.06	−0.03
BIS	0.00	0.01	−0.00
BAS	0.00	0.01	0.05
Step 2
Writing condition × BIS	−0.04	0.02	−0.45*
Writing condition × BAS	0.02	0.01	0.35*
BIS × BAS	0.00	0.00	−0.02
Step 3
Writing condition × BIS × BAS	−0.00	0.00	−0.20

Notes: BIS and BAS were centered at their means. Writing condition coded 0 = free writing condition, 1 = controlled writing condition; BIS = behavioral inhibition sensitivity; BAS = behavioral activation sensitivity.

*P < 0.05.