dear spmers, i am interested in 2 conditions a and b and scanned a single subject 3 times in each condition. for comparison i have a group of 10 subjects, each scanned once per condition. what is the best way to compare the single subject to the group? greetings and thanks for suggestions fred -- Gruss Alfred Buck Division of Nuclear Medicine University Hospital 8091 Zurich Switzerland fax 41 1 255 44 14 phone 41 1 255 35 47 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%