MATRIX DATA VARIABLES=ROWTYPE_ O1 O2 O3 O4.
BEGIN DATA.
N 300 300 300 300
COR 1.0
COR .70 1.0
COR .65 .66 1.0
COR .62 .63 .60 1.0
END DATA.
FACTOR
  /MATRIX=IN(COR=*)
  /MISSING LISTWISE
  /ANALYSIS O1 O2 O3 O4
  /PRINT INITIAL EXTRACTION
  /CRITERIA FACTORS(1) ITERATE(25)
  /EXTRACTION ML
  /ROTATION NOROTATE.