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Table 2 Comparison of pre and post intervention scores on outcome measures for the experimental group (N = 18)

From: Effects of problem-solving interventions on aggressive behaviours among primary school pupils in Ibadan, Nigeria

No Variable Pre-intervention Post-intervention t test t (df) p value
1 Total TRAB (mean, SD) [range of 0–42] 29.6 (6.9) 18.2 (8.6) 5.18 (17) <0.001*
2 SDQ (mean, SD)
 Emotional 3.9 (1.5) 4.6 (1.7) −1.23 (17) 0.24
 Conduct 6.17 (2.5) 6.0 (3.4) 0.24 (17) 0.81
 Hyperactivity 5.9 (2.4) 7.6 (4.9) −1.40 (17) 0.18
 Peer problems 5.5 (2.0) 6.3 (2.7) −1.05 (17) 0.31
Total difficulties score [range of 0–40] 21.5 (5.6) 24.4 (7.8) −1.35 (17) 0.19
 Prosocial 7.7 (3.8) 6.8 (3.9) 1.76 (17) 0.10
3 SRAS (mean, SD) [range of 0–14] 8.7 (4.3) 6.1 (4.9) 2.47 (17) 0.02*
4 ATAQ (mean, SD) [range of 19–76]
 Retaliation belief 9.4 (3.3) 5.8 (2.7) 5.37 (17) <0.001*
 General belief 21.8 (5.5) 17.2 (5.5) 4.14 (17) 0.001*
 Coping strategies 16.8 (3.1) 22.1 (2.8) −4.42 (17) <0.001*
5 SCAS (mean, SD) [range of 0–28] 16.2 (6.4) 13.8 (5.3) 1.79 (17) 0.09
  1. Two students dropped out
  2. TRAB Teacher rating of aggressive behaviours (total maximum score = 42), SDQ Strengths and Difficulties Questionnaire (total maximum score = 40), SRAS Self rated aggression scale (total maximum score = 14), ATAQ Attitude towards aggression questionnaire (total maximum score = 76), SCAS Social cognition and attribution scale (total maximum score = 28)
  3. * Data was statistically restricted with Bonferonni adjustment