<p>Transitions scholars have accepted the challenge of finding
sustainable trajectories for societies and economies and have generated several
tools and frameworks to guide action on the socio-technical changes necessary
for meaningful system change. Most if not all of these require changes in behaviour
by a diverse range of actors, including citizens, consumers, policy makers,
business leaders, industry workers and researchers themselves. Simultaneously, there
has a been a global expansion of behavioural public policy units in governments
since 2010. However, perspectives on the links between behaviour and broader
system change are relatively scarce and underdeveloped in sustainability
transitions (ST) literature and behavioural public policy alike. Contributions to
date in ST have tended to favour a particular perspective, i.e. social practice
theory. We argue that ST literature can benefit from broadening its conceptual
and methodological underpinnings regarding behaviour with a view to incorporate
more pluralistic understandings and approaches to behaviour change. This paper
critically and systematically reviews current contributions on behaviour in the
transitions literature. We identify four distinct perspectives, each drawing on
different conceptualisations, causality, methods and disciplinary foundations: reflective,
automatic, strategic and everyday behaviour. We illustrate and argue for the
need for a more dynamic and integrative approach to behaviour in the field
taking into account the diversity of phases, scales and contexts through which
sustainability transitions unfold. </p>