*Filter participants who reacted on chance level COMPUTE filter_$=(SubjN ~= 4 & SubjN ~= 15 & SubjN ~= 21 & SubjN ~= 22 & SubjN ~= 25). VARIABLE LABELS filter_$ 'SubjN ~= 4 & SubjN ~= 15 & SubjN ~= 21 & SubjN ~= 22 & '+ 'SubjN ~= 25 (FILTER)'. VALUE LABELS filter_$ 0 'Not Selected' 1 'Selected'. FORMATS filter_$ (f1.0). FILTER BY filter_$. EXECUTE. *t-test comparing reaction times and accuracies of 1-back and 3-back T-TEST PAIRS=ACCn1 RTn1 WITH ACCn3 RTn3 (PAIRED) /CRITERIA=CI(.9500) /MISSING=ANALYSIS.