ear Colleagues,This issue is devoted to the 15th Bio-Clinical Interface Conference, the Colloquede Rouffach, held in Rouffach, France, from September 28 to October 1, 2005.The themewas "Diagnosis and management of schizophrenic disorders." For four days, a great num-ber of outstanding scientists discussed almost all the relevant aspects of current researchin schizophrenia, under the presidency of Prof Nancy Andreasen. Many of these lecturesare contained in this issue; others will appear in coming issues of Dialogues in ClinicalNeuroscience.The sessions of the Colloque were divided up into a series of topics, as outlinedbelow. In most medical disciplines, animal models are used to better understand the physio-logical abnormalities in the various disorders, and to find new treatment options. Newmodels and new methods were presented. The relationship between schizophrenia and neurological disorders, which frequentlyinvolve schizophrenic symptoms, can contribute to the understanding of the patho-physiology of the disorder, and can serve as a model for it. Clinical heterogeneity was discussed in two sessions covering topics from prodromalstates in adolescents to schizophrenia in late life. Many lectures were presented on technical topics such as functional magnetic reso-nance imaging (fMRI), magnetoencephalography (MEG), electroencephalography(EEG), genetics, pharmacogenetics, pharmacogenomics, and neuropathology. Despitethe great advances made in these technologies, many questions still remain to beanswered, and the results have so far not been very conclusive, indicating that there isa still long way to go in the understanding of schizophrenia. The management of schizophrenia in clinical practice needs interdisciplinaryapproaches, examples of which can be seen in the US MATRICS and the GermanResearch Network projects. Treatments with new antipsychotics are very promising, but still not optimal. We needto consider more than psychopathological outcome variables, and the search for newtreatment strategies which target the true cause of the disorder is becoming more andmore important.E d i t o r i a lD1