Table 3.

Negative binomial regression analyses predicting daily helping for categories of everyday helping from left BNST activation

	Family & Friend		Acquaintance & Stranger		Reactive		Proactive
	IRR	SE	IRR	SE	IRR	SE	IRR	SE
Altruist status	0.20	0.20	017**	0.11	0.27	0.21	0.18**	0.08
Empathic concern (EC)	1.08	0.26	0.95	0.16	1.22	0.21	0.96	0.11
Altruist status × EC	1.54	0.47	1.58*	0.32	1.35	0.33	1.61**	0.24
Left BNST activation	1.99	0.79	1.98*	0.58	1.42	0.51	2.07**	0.43
Demographics
Gender	0.73	0.20	1.30	1.30	1.04	0.27	1.11	0.17
Age	1.00	0.02	1.00	1.00	1.01	0.01	1.00	0.01
Population size	0.85	0.08	1.09	1.09	0.97	0.08	0.98	0.05
Education	0.85	0.19	0.80	0.80	0.90	0.21	0.87	0.13
Race	1.15	0.43	1.13	1.13	1.31	0.48	1.13	0.19

Note: Standard errors are robust standard errors.

^*p < .05,

^**p < .01