Head-Eye Coordination Increases with Age and Varies across Countries.

6 ) as predictors revealed that only GDP was a significant predictor of HEC ( r 2 = 0.492, F 1,10 = 9.7, p = 0.011; 95% confidence intervals of slope = 0.0826 to 0.5001; see equation 2), with only latitude nearing significance ( t = 2.04, p = 0.072; all other variables | t values| < 1.01, p values > 0.34).

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