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Table 5 Reliability coefficients for Parent, Teacher and Self rated SDQ in a community sample of 3 – 17 year old Chinese children

From: The validity, reliability and normative scores of the parent, teacher and self report versions of the Strengths and Difficulties Questionnaire in China

  Reliability Correlations – Cronbach's α
SDQ Scale Parent (N = 1965) Teacher (N = 1965) Self (N = 690)
Total Difficulties Score 0.59 0.60 0.57
Emotional Symptoms 0.60 (0.67)* 0.63 (0.78) 0.59 (0.66)
Conduct Problems 0.48 (0.63) 0.63 (0.74) 0.33 (0.60)
Hyperactivity – Inattention 0.76 (0.77) 0.82 (0.88) 0.64 (0.67)
Peer Problems 0.30 (0.57) 0.48 (0.70) 0.30 (0.41)
Prosocial Behaviour 0.68 (0.65) 0.83 (0.84) 0.66 (0.66)
  1. *Comparative data from Goodman, 2001 in brackets for comparison