late maturing males are most at risk has been linked to variation in the measurement of alcohol use across studies and to the age of the sample studied (Biehl et al., 2007). However, the relative consistent support for the early timing hypothesis in relation to substance use concurs with the view that different models of pubertal timing effects may vary in their ability to explain or characterise different domains of adolescent behaviour and psychological functioning (Weichold et al., 2003).