Table 4.

Logistic regression models predicting decisions to purchase or not (n=26)

	Self Report	Brain Activation	Combined
Constant	−16.14 ***	−1.74	−16.05 ***
	−6.12 (0.379)	−0.30 (0.170)	−6.12 (0.381)
Preference	18.95 ***		18.79 ***
	1.21 (0.064)		1.20 (0.064)
Price differential	12.35 ***		11.97 ***
	0.14 (0.011)		0.13 (0.011)
NAcc (Bilateral)		5.59 ***	2.79 **
		0.85 (0.153)	0.60 (0.217)
MPFC (Bilateral)		7.27 ***	3.42 ***
		0.78 (0.107)	0.51 (0.150)
Insula (Right)		−5.31 ***	−2.53 **
		−0.85 (0.160)	−0.61 (0.239)
Number of observations	3,909	3,909	3,909
Pseudo-R2	0.528	0.105	0.533
AIC	2279.6	4271.8	2259.7
Notes: Subjects with significant fixed effects (out of 26; p<.01)	11	16	13

Regression includes subject fixed effects, Z-scores above coefficients with standard errors in parentheses

^***Significance: p<.001;

^**p<.01;

^*p<.05.

AIC: Akaike Information Criterion (lower score indicates better fit to the data)