A new English instrument for screening mental health in children and adolescents, the Strengths and Difficulties Questionnaire (SDQ), was translated into Swedish and used for parental ratings of 900 children aged 6-10 years from the general population. The SDQ which comprises 25 items, divided into 5 subscales (prosocial, hyperactivity, emotional symptoms, conduct problems, and peer problems) was developed from the Rutter scales. An earlier English validation study has shown the two instruments to have equal ability to identify child psychiatric cases, but the SDQ also provides screening on empathy and prosocial behaviour which are aspects of child development emphasized in current child psychiatry. The design of the SDQ with both strengths' and difficulties' items supposedly increases acceptability of the instrument on behalf of informants and makes the questionnaire especially suitable for studies of general population where the majority of children are healthy. Our results, which are novel findings on the instrument, confirmed the postulated factor structure and showed significant gender-differences in results on the total scale, prosocial and hyperactivity subscales and on some of the single items. Moreover, our investigation showed that a Swedish translation of the parental version of the SDQ worked well.

Background: The estimated prevalence rate of Pervasive Developmental Disorders (PDD) in children is 6 per 1.000. Parenting children who are intellectually impaired and have PDDs is known to be linked to the impaired well-being of the parents themselves. However, there is still little available data on health-related quality of life (HRQL) in parents of children with Asperger Syndrome (AS) and High-Functioning Autism (HFA), or other PDD diagnoses in children of normal intelligence. The present study aimed to evaluate aspects of HRQL in parents of school-age children with AS/HFA and the correlates with child behaviour characteristics.

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The descriptive statistics suggest that the distributions of SDQ scores are very similar across the Nordic countries. Further collaborative efforts in establishing norms and evaluating the validity of the SDQ as a screening instrument are encouraged.

The Strengths and Difficulties Questionnaire (SDQ) is an internationally widely used, brief screening instrument for mental health problems in children and teenagers. The SDQ probes behaviours and psychological attributes reflecting the child's difficulties as well as strengths, and targets hyperactivity/inattention, emotional symptoms, conduct problems, peer problems and prosocial behaviour. Also, the instrument taps the impact aspect, i.e. whether the child is judged to suffer from emotional or behavioural problems severe enough to cause distress or social impairment. Studies of the original English SDQ, as well as of translations into several other languages, attest to a compelling usefulness and validity of the instrument. In this investigation, the adequacy of the Swedish adaptation of the SDQ (SDQ-Swe) was tested in comparisons between parent reports on 5-15-year-old children drawn from a community sample (n=263) and from a child psychiatric sample (n=230). Results showed that the instrument differentiated well between the community and the psychiatric samples, the latter displaying more symptoms, fewer strengths and more social impairment. Moreover, ROC analyses showed satisfactory sensitivity and specificity of the principal scales of the SDQ-Swe at proposed cut-offs. Hence, results showed adequate validity of the SDQ-Swe, suggesting that this new instrument, an instrument in tune with the ideas of contemporary child psychiatry and psychology, is a useful tool for mental health screening in children and adolescents.