Data NInputvars=32
 Missing=-1.00		           
 Rectangular File=mri-iqfactor.rec
 Labels famid zyg
 sex.1 int.1 cb.1 gm.1 wm.1 wo.1 ok.1 bp.1 rk.1 if.1 cl.1 pa.1 il.1 mx.1 ot.1
 sex.2 int.2 cb.2 gm.2 wm.2 wo.2 ok.2 bp.2 rk.2 if.2 cl.2 pa.2 il.2 mx.2 ot.2
 Select if zyg < 3 ;	!select mz's
 Select 
  cb.1 gm.1 wm.1  rk.1 cl.1
  cb.2 gm.2 wm.2  rk.2 cl.2 ;