Table 5.

Caudate: $P{S}_i={\beta }_0+{\beta }_1{\text{Choice}}_{i,m}\times \text{Trust}\hspace{0.17em}\text{Type}+{\beta }_2\text{Perceptual}\hspace{0.17em}{\text{Similarity}}_{i,t}\times \text{Trust}\hspace{0.17em}\text{Type}+\epsilon$

Coefficient $\left(\mathit{\beta }\right)$	Estimate (SE)	t value	P value
Intercept	−0.06 (0.02)	−2.35	0.019*
Untrustworthy $\times$ Perceptual Similarity	0.01 (0.01)	1.41	0.15
Trustworthy $\times$ Perceptual Similarity	−0.014 (0.02)	−1.10	0.28
Untrustworthy $\times$ Choice	0.046 (0.06)	0.71	0.47
Trustworthy $\times$ Choice	0.19 (0.08)	2.48	0.01**

ROI from conjunction of face presentation across all trust types during the initial learning episode (conditioning phase; SI Appendix, Table S5). **P < 0.01, *P < 0.05.