This multicentre study examined the influence of patient demographic, disease status and psychological variables on clinical geneticists/genetic counsellors (consultants) behaviours in initial consultations with women from high-risk breast cancer families. One hundred and fifty-eight women completed a pre-clinic self-report questionnaire. The consultations were audiotaped, transcribed verbatim and coded. Consultants did not vary their behaviour according to women's expectations. However, significantly more aspects of genetic testing were discussed with women who were affected with breast cancer (P50.001), screening and management with unaffected women (P=0.01) and breast cancer prevention with younger women (P=0.01). Prophylactic mastectomy was discussed more frequently with women with medical and allied health training (P=0.02), and prophylactic oophorectomy with women affected with breast cancer (P=0.03), those in non-professional occupations (P=0.04) and with a family history of breast and ovarian cancer (P50.001). Consultants used significantly more behaviours to facilitate understanding with women who were in non-professional occupations (P=0.04); facilitated active patient involvement more with women affected with breast cancer (P50.001) and used more supportive and counselling behaviours with affected women (P=0.02). This study showed that patient demographics were more likely to predict consultants' communication behaviours than the woman's psychological status. Methods to facilitate assessment of psychological morbidity are needed to allow more tailored communication. Previous research has documented consultants' reports of the cancer genetic services typically provided to women from high-risk breast cancer families. These include cancer risk assessment and education, facilitation of genetic testing, pre-and post-test counselling, provision of personally tailored cancer risk management recommendations, and psychosocial counselling and support services (NH and MRC, 1999).A recent survey of Australian clinical geneticists and genetic counsellors identified the provision of individualised care as the single most important goal of genetic counselling (Lobb et al, 2001). These consultants emphasised the variability in women's current levels of expectations and needs when they attend genetic counselling and the importance of tailoring communication accordingly.Studies that have examined levels of breast cancer genetics knowledge among women with a family history of breast cancer (Lerman et al, 1996Hughes et al, 1997;Wonderlick and Fine, 1997;Cull et al, 1998;Bluman et al, 1999;Donovan and Tucker, 2000) have found wide variation in knowledge about many facets of genetic testing, including the cancer risks associated with different genes and different mutations and the effectiveness of interventions, for example screening, chemoprevention, or surgery for reducing risk (Geller et al, 1997;Audrain et al, 1998;Bluman et al, 1999).Similarly, there is wide variation in the accuracy of women's perceptions of their li...