Juvenile group behaviour is increasingly linked to crimil activity, both through statistics and the media. The present paper discusses the methods used by Porter and Alison for researching hierarchies, particularly leadership behaviour, in juvenile crimil groups. The paper discusses available data sources, advocating the use of archival sources such as law reports and media accounts for exploring crimil leadership. Further, the paper talks the reader through the method of partially ordered scalogram alysis (POSA), a multidimensiol scaling technique suited to exploring the concepts of interest here. The work discussed takes the perspective that such behaviour is not 'abnormal' or pathological but rooted in normal processes of peer group dymics. The methods draw upon social and organisatiol psychology to produce a model of leadership that would be applicable to both crimil and non-crimil contexts.