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. 2017 Sep 18;114(39):10324–10331. doi: 10.1073/pnas.1707719114

Table 1.

Results from one-sample t tests comparing estimates of past and current Black–White economic equality with national statistics for the five individual markers of economic inequality comprising our composite index

Study 1, n = 444 Study 2, n = 419 Study 3, n = 312 Actual racial gap
Economic outcome Mean (SD) t-value Mean (SD) t-value Mean (SD) t-value
Past estimates
 Health benefits −28.12 (39.33) −15.07* −26.79 (40.76) −13.45* −22.41 (40.45) −9.79* 10.24
 College wages −16.47 (36.27) −9.46* −20.35 (37.99) −10.96* −12.24 (36.99) −5.85* 13.49
 High school wages −17.13 (38.81) −9.30* −19.19 (39.02) −10.07* −13.20 (38.30) −6.09* 16.33
 Wealth 52.00 (40.27) 27.21* 53.67 (40.88) 26.87* 61.15 (39.37) 27.44* 93.35
 Income −2.65 (40.21) −1.39 −1.78 (43.19) −0.85 7.35 (43.45) 2.99* 48.90
 Composite −2.47 (34.37) −1.52 −2.89 (35.94) −1.65 4.13 (36.26) 2.01*
Current estimates
 Health benefits −1.46 (40.46) −0.76 6.02 (41.51) 2.97* 5.24 (38.17) 2.43* 14.36
 College wages 10.79 (37.30) 6.10* 13.46 (37.36) 7.37* 20.05 (34.12) 10.38* 19.04
 High school wages 9.58 (40.18) 5.02* 12.45 (40.69) 6.26* 18.41 (34.29) 9.48* 20.89
 Wealth 74.61 (44.38) 35.42* 80.53 (44.77) 36.82* 85.21 (40.15) 37.49* 94.96
 Income 22.96 (41.26) 11.72* 28.74 (43.19) 13.62* 35.27 (36.65) 17.00* 42.70
 Composite 23.30 (36.29) 13.53* 28.24 (37.19) 15.54* 32.84 (33.99) 17.06*

A mean of zero indicates perfect accuracy in estimates of Black–White equality in health benefits, college wages, high school wages, wealth, and income, respectively. Negative numbers reflect underestimates of equality; positive numbers reflect overestimates. An asterisk after a t-value indicates that P < 0.05. The rightmost column reports the actual gap between the economic outcome for White Americans and Black Americans (all scored in the pro-White direction) based on CPS statistics; White American economic outcomes are equal to 100. For example, the 94.96 statistic for the current wealth gap indicates that for every $100 US of wealth a White American accumulates, a Black American has $5.04 US.