| 1996 (n = 200) | 2004 (n = 327) | Difference 1996–2004 |
---|---|---|---|
 | M (sd) | M (sd) | Mean difference |
All | 1.9 (.45) | 2.0 (.39) | +.13** |
Full-timers | 1.9 (.44) | 1.9 (.37) | +.07 |
Part-timers | 2.2 (.42)*** | 2.3 (.35)*** | +.05 |
Part-timers | Â | Â | Â |
Male | 1.8 (.33) | 2.2 (.38) | +.40** |
Female | 2.4 (.27)*** | 2.3 (.29) | -.11 |
Full-timers | Â | Â | Â |
Male | 1.8 (.42) | 1.9 (.37) | +.11 |
Female | 2.3 (.41)*** | 2.0 (.37) | -.25 |