In 2009-2010, The Squiggle Foundation, whose aim is to stimulate interest in the work of Donald Winnicott, organized a series of lectures on the theme of "the antisocial tendency". These lectures are offered here to the wider public much as they were originally given. The speakers, each one an established figure in child care policy or in the residential and therapeutic management of disaffected youngsters, reflect on society's changing attitudes towards antisocial behaviour and its manifestations over the past half century.