OLS Regressions of Economics Weighted Average and Mathematics Weighted Average on Left Hand 2D:4D and its Square.

Note: The numbers in brackets are OLS standard errors; *Significant at 10%, ** 5%, *** 1%; + 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. Lmax (Lmin) is the value of left digit ratio that maximizes (minimizes) the dependent variable, equal to -b1/(2×b2), computed only for significant values.