Comment: The following creates and "computes" a new variable which is the average freezing of total behaviors for each pair. numeric mpf (f8.0). COMPUTE mpf = (pobsaf + pobsbf)/2 . VARIABLE LABELS mpf 'Mean Percent Freezing' . EXECUTE . Comment: The following runs an independant samples T-Test comparing the two conditions on the average percent freezing. T-TEST GROUPS=cond(1 2) /MISSING=ANALYSIS /VARIABLES=mpf /CRITERIA=CIN(.95) . Comment: The following "counts" the number of times that each behvaior occured for observer A and B for the first 30 trials and the second 30 trials. numeric cfa1st30 (f8.0). execute. numeric cfa2nd30 (f8.0). execute. numeric cfb1st30 (f8.0). execute. numeric cfb2nd30 (f8.0). execute. COUNT cfa1st30 = nobsa1 to nobsa30 (1) . VARIABLE LABELS cfa1st30 'Count Observer A Freezes for First 30 Trials' . EXECUTE . COUNT cfa2nd30 = nobsa31 to nobsa60 (1) . VARIABLE LABELS cfa2nd30 'Count Observer A Freezes for Second 30 Trials' . EXECUTE . COUNT cfb1st30 = nobsa1 to nobsa30 (1) . VARIABLE LABELS cfb1st30 'Count Observer A Freezes for First 30 Trials' . EXECUTE . COUNT cfb2nd30 = nobsa31 to nobsa60 (1) . VARIABLE LABELS cfb2nd30 'Count Observer A Freezes for Second 30 Trials' . EXECUTE . Comment: The following creates and "computes" the percentage of times that freezing occured for the first 30 trials and the second thirty trials for both observers. numeric pfa1st30 (f8.0). execute. numeric pfa2nd30 (f8.0). execute. numeric pfb1st30 (f8.0). execute. numeric pfb2nd30 (f8.0). execute. COMPUTE pfa1st30 = cfa1st30 / 30 *100 . VARIABLE LABELS pfa1st30 'Percent Freezing for Obs. 1 for First Thirty Trials'. EXECUTE . COMPUTE pfa2nd30 = cfa2nd30 / 30 *100 . VARIABLE LABELS pfa2nd30 'Percent Freezing for Obs. 1 for Second Thirty Trials'. EXECUTE . COMPUTE pfb1st30 = cfb1st30 / 30 *100 . VARIABLE LABELS pfb1st30 'Percent Freezing for Obs. 2 for First Thirty Trials'. EXECUTE . COMPUTE pfb2nd30 = cfb2nd30 / 30 *100 . VARIABLE LABELS pfb2nd30 'Percent Freezing for Obs. 2 for Second Thirty Trials'. EXECUTE . Comment: The following creates and "computes" 2 new variables which are the average freezing of total behaviors for first 30 trials and second 30 trials. numeric mpf1st30 (f8.0). numeric mpf2nd30 (f8.0). COMPUTE mpf1st30 = (pfa1st30 + pfb1st30)/2 . VARIABLE LABELS mpf1st30 'Mean Percent Freezing for First 30 Trials'. EXECUTE . COMPUTE mpf2nd30 = (pfa2nd30 + pfb2nd30)/2 . VARIABLE LABELS mpf2nd30 'Mean Percent Freezing for Second 30 Trials'. EXECUTE . Comment: The following runs a "Split File" for conditions. SORT CASES BY cond . SPLIT FILE SEPARATE BY cond . Comment: The following runs discriptive statistics for Interrater reliability. descriptives variable = pagf. execute. Comment: The following runs a paired samples T-Test comparing the first thirty trials and second 30 trials on the average percent freezing for both conditions. T-TEST PAIRS= mpf1st30 WITH mpf2nd30 (PAIRED) /CRITERIA=CIN(.95) /MISSING=ANALYSIS.