Summary statistics data containing published covariances        from Thomas O. Williams, Ronald C. Eaves, and Cynthia Cox,        2 Apr 2002, "Confirmatory factor analysis of an instrument        designed to measure affective and cognitive arousal",        _Educational and Psychological Measurement_,        vol. 62 no. 2, 264-283.
a1-a5 report scores from 5 miniscales designed to measure        affective arousal.
c1-c5 report scores from 5 miniscales designed to measure        cognitive arousal.
The series of tests, known as the VST II (Visual Similes Test II)       were administered to 216 children ages 10 to 12.  The miniscales are       sums of scores of 5 to 6 items in VST II.