Table S5.

Regressions of response speeds

Regressor	Accept/reject	Punish/do nothing/reward	Punish magnitude†	Reward magnitude
Intercept	9.96e-1*** (6.08e-2)	1.58*** (8.06e-2)	3.44*** (0.65)	1.91*** (0.29)
Offer amount‡	3.84e-2*** (3.28e-3)	−1.07e-3 (7.61e-3)	0.43* (0.17)	0.05 (0.04)
|Offer amount|§	−2.68e-2*** (6.35e-3)	−1.02e-2 (1.46e-2)		−0.08 (0.08)
Group¶	4.96e-2 (7.87e-2)	−1.35e-2 (1.05e-1)	−2.16** (0.78)	−0.36 (0.37)
Group × offer amount	8.69e-4 (4.28e-3)	1.10e-2 (9.91e-3)	−0.53** (0.20)	0.01 (0.07)
Group × |offer amount|	8.25e-3 (8.28e-3)	−1.79e-2 (1.91e-2)		0.14 (0.10)
Belief#	9.68e-2 (1.10e-1)	1.65e-1 (1.46e-1; 0.51)	7.21*** (1.24)	0.40 (0.51)
Belief × offer amount	1.38e-2* (5.90e-3)	3.49e-2* (1.36e-2)	1.91*** (0.33)	0.15* (0.08)
Belief × |offer amount|	1.76e-3 (1.15e-2)	2.00e-2 (2.63e-2)		0.06 (0.02)

β-Coefficients (SEs) from mixed effects linear regressions with random participant-level intercept of response speeds (the inverse of reaction times) for choices to accept or reject; choices to punish, do nothing, or reward; and choices of punishment and reward magnitude (n = 40).

^†|Offer amount| regressor omitted because of collinearity with offer amount regressor.

^***P < 0.001.

^‡Centered at mean (€6).

^*P < 0.05.

^§Centered at mean (€6) and absolute valued.

^¶Testosterone = 1, placebo = 0.

^**P < 0.01.

^#Believed testosterone = 1, believed placebo = 0.