Brief report: A pilot study of the validity and reliability of the Greek version of the Social Communication Questionnaire

In this pilot study we investigated the psychometric properties of the Greek version of SCQ in a small sample of 130 seven to ten year-old children (77 typically developing children and 53 children with a diagnosis of ASD). The children with ASD were diagnosed with Autism (n1 = 27) or High-Functioning ASD (n2 = 26). The three subscales of the SCQ were confirmed and the modification indices produced an acceptable fit. The Cronbach-a coefficient was high and acceptable for all subscales and the total SCQ score. Roc analysis yielded an optimal cut-off point of 15 for the Autism group versus the Non-ASD group with a sensitivity of 96.3% and a specificity of 98.7%. For both the ASD group as a total and the High-Functioning ASD group the optimal cut-off point was found to be 11 with a satisfactory balance between sensitivity and specificity. The Greek version of SCQ seems to be a valid and reliable instrument for 7 to 10 year-old children. The findings support the need for adjusting the cut-off point to the subject's level of functioning.