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. Author manuscript; available in PMC: 2010 Aug 25.
Published in final edited form as: Aggress Behav. 2006 Apr 1;32(2):159–171. doi: 10.1002/ab.20115

TABLE II.

Means, SDs, and Coefficient α for Reactive–Proactive Scale Scores for the Two Replication Samples and the Pooled Total Sample

Scale Sample 1 (N = 170) Sample 2 (N = 164) Total (N = 334)
Reactive
 Mean 6.87 7.42 7.14
 Median 2.0 1.0 2.0
 SD 3.97 4.39 4.18
α 0.81 0.86 0.84
Proactive
 Mean 2.74 2.84 2.79
 Median 7.0 7.0 7.0
 SD 3.26 3.67 3.47
α 0.84 0.87 0.86
Total aggression
 Mean 9.61 10.26 9.93
 Median 8.0 8.0 8.0
 SD 6.55 7.39 6.97
α 0.89 0.91 0.90