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. Author manuscript; available in PMC: 2019 May 1.
Published in final edited form as: J Clin Child Adolesc Psychol. 2016 Apr 21;47(3):467–482. doi: 10.1080/15374416.2016.1144190

TABLE 2.

Means and Standard Deviations of Interpersonal Callousness by Trajectory Group Membership

Trajectories % of N M Age

8 9 10 11 12 13 14 15








M SD M SD M SD M SD M SD M SD M SD M SD
Early-Onset Chronic 10.30% 6.99a 4.17 8.18a 4.76 10.52a 4.14 10.72a 4.37 11.20a 3.84 10.57a 3.72 10.69a 3.74 10.22a 3.40
Childhood-Limited 10.10% 10.54b 2.57 7.58a 4.87 6.41b 4.63 5.58b 4.22 3.99b 4.26 3.11b 3.32 5.39b 4.73 3.51b 3.55
Adolescent-Onset 11.80% 1.75c 2.18 2.39b 2.96 3.94c 4.10 3.97b 3.40 5.27b,c 4.20 6.17c 4.54 7.35c 4.34 10.59a 3.07
Moderate 17.40% 3.26d 2.51 5.39c 3.77 7.31b 4.41 7.86c 4.53 6.85c 4.31 6.04c 4.55 4.62b 3.82 1.82c 1.75
Low 50.40% 0.68e 1.36 1.09b 1.90 1.68d 2.74 1.49d 2.75 1.30d 2.23 1.58d 2.57 1.69d 3.11 1.11c 1.73
Total sample 2.85 3.91 3.37 4.20 4.29 4.74 4.22 4.80 4.04 4.69 3.93 4.52 4.17 4.71 3.48 4.41

Note. Means designated with different subscript letters are significantly different from each other (p < .05) based on pairwise comparisons according to Hochberg’s GT2 procedure.