Fig. 4.

Contour plots of relations between prosocial behavior, age and cortical thickness. The plots indicate that the relations between prosociality and CT were positive for the youngest and the oldest group across all the identified significant clusters. Such a relationship was not present in the middle of the age range (late adolescence). Each plot contains mean cortical thickness from the clusters where interactions between prosociality and age² were significant. The green to white color scale indicates low to high cortical thickness values.