One possible mediating variable may be curriculum-based; as externalising behaviour decreases, it may be the case that pupils are more able to participate in curriculum-based activities, and may be developing their executive function skills in this way (McCrae, Mueller, and Parrila 1999).
![[This page as RDF]](http://data.gesis.org/somesci/static/rdf-icon.gif){kind=icon}