Much social psychological research has sought to distinguish itself fr
om more 'individualistic' approaches to human cognition and personalit
y. Much of this debate fails to take account of the interactions betwe
en social and intrapsychic processes which, it is argued, are vital to
the formulation of unifying theoretical principles and to practical a
pplications in the field of health psychology. A general theoretical p
erspective is outlined, based on notions of connectionist systems oper
ating at both the individual and interpersonal level. A special featur
e is the assumption that we depend on communication with and from othe
r people to attribute reality to our interpretations of events. The be
nefits of this perspective for health psychology are then illustrated
in the contexts of attitude-behaviour relations, appraisals of risk an
d uncertainty, person-situation interactions, and group processes and
social influence.