Comment Here comes some focused Roomba Paper Syntax. Remember that to copy this out and into your editor, it seems that you should hit Ctrl-A and then paste it in. This maintains the formatting. Comment We'll be creating the new variables. I'm just going to put ****s between the logical units without telling you what's happening to make you think about the syntax. Trust me you'll learn more this way than if I just told you. ************* RECODE qud1 qud2 (1=1) (3=1) (2=2) (4=2) INTO lrh1 lrh2 . VARIABLE LABELS lrh1 'Left Right Half 1' /lrh2 'Left Right Half 2'. EXECUTE . value labels lrh1 1 'Left Half' 2 'Right Half'. execute. value labels lrh2 1 'Left Half' 2 'Right Half'. execute. ******************** DO IF (lrh1 = lrh2) . RECODE lrh1 (1=1) (2=2) INTO lrh . END IF . VARIABLE LABELS lrh 'Left/Right Half'. EXECUTE . value labels lrh 1 'Left' 2 'Right'. execute. ******************* DO IF (beh1 = beh2) . RECODE beh1 (1=1) (2=2)(3=3)(4=4) (5=5) (6=6) INTO beh . END IF . VARIABLE LABELS beh 'Behaviors'. EXECUTE . value labels beh 1 'Spiral' 2 'Spin' 3 'Turn' 4 'Straight' 5 'Straight Along Wall/Edge' 6 'Shimmy Along Wall/Edge'. execute. RECODE trial (Lowest thru 150=1) (151 thru Highest=2) INTO halft . VARIABLE LABELS halft 'Half of Session'. EXECUTE . value labels halft 1 'First Half' 2 'Second Half'. execute. ******************** RECODE beh1 beh2 (4 thru 6=1) (1 thru 3=2) INTO strt1 strt2 . VARIABLE LABELS strt1 'Went Straight 1'/strt2 'Went Straight 2'. EXECUTE . value labels strt1 1 'Yes' 2 'No' . execute. value labels strt2 1 'Yes' 2 'No' . execute. ************************* DO IF (strt1 = strt2) . RECODE strt1 (1=1) (2=2) INTO strt . END IF . VARIABLE LABELS strt 'Straight Yes/No'. EXECUTE . value labels strt 1 'Yes' 2 'No' . execute. ********************** DO IF (tape = 1) . RECODE lrh (1=1) (2=2) INTO Same . END IF . DO IF (tape = 2) . RECODE lrh (1=2) (2=1) INTO Same . END IF . VARIABLE LABELS Same 'Same Half'. EXECUTE . value labels same 1 'Yes' 2 'No' . execute. ****************** RECODE tape (1=1) (2=1) (3=2) INTO fed . VARIABLE LABELS fed 'Fed'. EXECUTE . value labels fed 1 'Yes' 2 'No' . execute. ****************** Comment OK, that does it for the new variables, I think. You should be able to run the statistics on your own. When you have 3 variables in a Chi2, put them in the 3 boxes provided in the order I mentioned them in the page you followed to get here. Then you should get Chi2 outputs that you can interpret. Break a leg!! .