Maturity-based correction mechanism for talent identification: When is it needed, does it work, and does it help to better predict who will make it to the pros?

Table 4. Point-biserial correlations between each maturity indicator and adult performance level (professional vs. non-professional; N = 121).

	Mirwald	Moore-1	Moore-2	Fransen-1	Fransen-2	%PAH	%RAH
Adult performance level	0.13	0.14	0.10	0.13	0.13	0.21	0.02

%PAH = attained percentage of the predicted adult height; %RAH = attained percentage of the real adult height. Coding of the adult performance level (0 = non-professional, 1 = professional). Critical value of Pearson's r ( = 5%, one-tailed, df = 119): |r_crit| = 0.15.