Variable                     1        2        3          4        5        6              Mean          s.d. \\ 

1. job involvement  1.00                                                                15.82      3.73 \\

2. age                        0.13 1.00                                                         21.50  6.03 \\

3. SAT score           0.12  0.02  1.00                                          1071.98  134.52 \\

4. GPA                      0.37  0.29  0.26  1.00                                        2.78  0.63 \\

5. satisfaction         -0.01  0.03  0.27  0.08  1.00                               6.21 1.77 \\

6. performance        0.43  0.33  0.37  0.64  0.22 1.00                      3.54  1.24 \\