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. 2012 Oct 8;7(10):e46319. doi: 10.1371/journal.pone.0046319

Table 11. OLS Regressions of Russian Score and Math Score on Right Hand 2D:4D and its Square.

Moscow
Russian Score Math Score
Female Male Female Male
Explanatory Variables OLS OLS OLS OLS OLS OLS OLS OLS
Right Hand 2D:4D 1219.507*** + 1149.561* + −358.210 −594.132 1462.162** + 1548.033*** + −833.586 −386.7195
(386.220) (380.681) (840.250) (961.873) (737.697) (564.843) (1600.289) (1253.000)
Square of Right Hand 2D:4D −614.585*** + −595.052* + 176.008 304.791 −738.570** + −771.270*** + 436.514 232.749 +
(191.778) (190.327) (425.958) (494.139) (366.135) (279.479) (819.582) (646.371)
Right Hand 2D:4D × Faculty (Law) −57.484 + 11.199 3.351 −89.117 +
(35.477) (50.449) (53.419) (72.092)
Right Hand 2D:4D × Faculty (Management) −52.595 + 24.576 −0.222 54.965
(38.187) (55.692) (35.739) (53.825)
Right Hand 2D:4D × Faculty (Political Science) −83.038** + −46.469 51.339 −27.447 +
(35.343) (86.183) (56.669) (325.798)
Square of Right Hand 2D:4D × Faculty (Law) 53.448 −15.820 + −23.801 + 67.591
(35.518) (51.530) (52.766) (72.923)
Square of Right Hand 2D:4D × Faculty (Management) 46.244 −27.884 −9.7882 + −66.265 +
(38.103) (56.956) (35.438) (55.039)
Square of Right Hand 2D:4D × Faculty (Political Science) 79.941** + 44.229 −73.334 + 2.309
(35.619) (89.353) (57.372) (338.526)
Constant −522.899 −469.594** 257.593 367.324 −652.064*** −698.040** 467.597 233.046
(194.271) (190.791) (414.004) (468.415) (371.258) (285.421) (780.261) (606.886)
R-squared (OLS) 0.025 0.114 0.003 0.046 0.025 0.503 0.006 0.449
Adjusted R-squared (OLS) 0.017 0.084 0.008 0.001 0.011 0.476 0.010 0.411
R-squared (Stepwise) 0.025 0.107 0.000 0.017 0.025 0.502 0.000 0.439
N 242 242 179 179 152 152 125 125
p-value(F) (OLS) 0.003 0.000 0.777 0.315 0.073 0.000 0.710 0.000
F-stat (OLS) 6.047 45542.000 0.252 1.178 2.667 27.740 0.344 11.880
Rmax (OLS) 0.992 0.976 (Econ)/ 1.035(Poli Sci) 0.990 1.004 (Economics)
Rmin (LPM)

Note: The numbers in brackets are robust standard errors; * Significant at 10%, ** 5%, *** 1% in OLS, LPM or Logit regressions; + p-value equal or less than 0.10 tolerance level in backward stepwise regressions, implying that the variable ought not to be removed from the model. Rmax (Rmin) is the value of right digit ratio that maximizes (minimizes) the dependent variable, equal to -b1/(2×b2), computed only for significant values in OLS and LPM regressions.