try something like this untested syntax.

compute randnum = rv.uniform(0,1). sort cases by randnum. compute ranorder = $casenum. execute. recode ranorder (1 thru 6 =1)(7 thru 12=2) (else=3) into mygroup. value labels mygroup 1 'first group' 2 'second group' 3 'residual'.

Hope this helps.

Art Art@DrKendall.org Social Research Consultants University Park, MD USA (301) 864-5570

Martin Sherman wrote: > Dear list: I have 36 subjects from which I want to randomize 12 of > them into two groups (six in a group). Does anyone know the > programing that I could use to accomplish this. thanks, martin > > Martin F. Sherman, Ph.D. Professor of Psychology Loyola College 222 B > Beatty Hall 4501 North Charles Street Baltimore, MD 21210 > > 410 617-2417 (Office) 410 617-5341 (FAX) msherman@loyola.edu >