Fig. 5: Linear Basis Spline Regression for Age and Flexible Reactions.
From: Reversal learning is influenced by cognitive flexibility and develops throughout early adolescence

Age is plotted on the x-axis, flexible reactions on the y-axis. The solid line is the estimated linear basis spline regression. The shaded area shows the 95% confidence interval. The knots at 14 and 18 years are shown as vertical lines.