hello many thanks for all your very useful answers on [SPM] Choice of starting values for mixture model estimation. I have another question related to segmentation in SPM2. Does it involve hard classification? If so, is it modal or random? best wishes Chiara Chiara Nosarti PhD, Lecturer in Cognitive Neuropsychology, Division of Psychological Medicine, Room M5.01.05 Section of General Psychiatry, PO Box 63, Institute of Psychiatry 16 De Crespigny Park, Denmark Hill, London SE5 8AF, UK Tel: 0207 848 0133 Fax: 0207 701 9044