FACTOR MATRIX IN(COR=*)
/MISSING LISTWISE
/ANALYSIS x1 x2 x3 x4 x5 x6 x7 x8
/PRINT INITIAL CORRELATION KMO EXTRACTION FSCORE
/FORMAT SORT BLANK(.40)
/PLOT EIGEN
/CRITERIA MINEIGEN(1) ITERATE(25)
/EXTRACTION PC
/CRITERIA ITERATE(25)
/ROTATION VARIMAX
/METHOD=CORRELATION.