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. 2022 Jul 6;119(28):e2112726119. doi: 10.1073/pnas.2112726119

Table 3.

Rationality (CCEI), altruism (α), and equality–efficiency orientation (ρ) in the physician sample and the three other samples

CCEI α ρ
(1)
vs. General ALP
(2)
vs. ALP elites
(3)
vs. MS
(4)
vs. General ALP
(5)
vs. ALP elites
(6)
vs. MS
(7)
vs. General ALP
(8)
vs. ALP elites
(9)
vs. MS
Physicians 0.95**** 0.70**** 0.33**** −0.29**** −0.35*** −0.49**** −0.00 −0.04 −0.66****
(0.06) (0.13) (0.08) (0.08) (0.12) (0.08) (0.08) (0.15) (0.08)
Female Yes Yes Yes Yes Yes Yes Yes Yes Yes
Age Yes Yes No Yes Yes No Yes Yes No
Census region Yes Yes Yes Yes Yes Yes Yes Yes Yes
N 1,277 366 787 1,277 366 787 1,069 294 588
R-squared 0.19 0.13 0.07 0.03 0.04 0.05 0.02 0.04 0.12

The coefficient on the indicator variable Physician measures the effect of being a physician on a subject‘s place in the composite distribution of CCEI (columns 1–3), α (columns 4–6), and ρ (columns 7–9). The ρ parameter of purely selfless (α = 0) and purely selfish (α = 1) subjects, who always give nothing or everything, cannot be identified. In the regressions reported in columns 7–9, we thus omit purely selfless and purely selfish using a one-sided test at the 10% level. SEs are in parentheses, bootstrapped using 500 repetitions. ***P < 0.01 and ****P < 0.001.