Despite wide agreement about the importance of effective communication in c
ancer care there is continuing evidence of the need for nurses, doctors and
colleagues to be helped to improve their communication skills. Consequentl
y, there has been a growing demand for effective methods for evaluation of
communication training programmes. This paper discusses theoretical perspec
tives in this field and describes the rationale underpinning the developmen
t of a detailed objective method of assessing interviews between health pro
fessionals and cancer patients. The method enables an utterance by utteranc
e rating of transcribed interviews to be made which can be used to construc
t profiles of interviewer and patient behaviours and interactions. All cate
gories were developed from interviews drawn from a large sample of particip
ants (n = 206) at counselling skills workshops. Six domains have been ident
ified and these are: grammatical style; the purpose of each technique; what
is being discussed, the degree of feeling expressed; explicit avoidance; a
nd the use made of patients' cues. Each domain contains a mutually exclusiv
e set of categories. In addition the method enables the sequence of events
to be plotted. Using these methods, examples from published studies will be
given to show how the processes of interaction within a health care interv
iew can be better understood, thus enabling the most effective techniques t
o be taught, the effectiveness of different teaching methods to be assessed
and how changes brought about by training have the potential to make a sig
nificant clinical difference to patients.