We assessed the clinical utility of the parent-reported Strengths and Difficulties Questionnaire (SDQ) as a screen for emotional and behavioural difficulties in 626 children and young people with intellectual disability. Using the Developmental Behavior Checklist (DBC2-P) to determine clinical caseness, the area under the curve for the SDQ total difficulties score was 0.876 (95% CI 0.841–0.911), indicating that it is a good measure for identifying significant emotional and behavioural difficulties requiring further investigation. Analyses supported the use of the same SDQ cut-off for those with and without intellectual disability, which may assist with consistent and comparable assessment in clinical practice.

Social psychological models of reasoned action, and behavioural models of verbal behaviour, predict that caregiver beliefs and attributions partially determine their responses to challenging behaviours. The present study examined the relationship between special educators’ causal attributions and the underlying function of challenging behaviours in children with learning disabilities. Sixty special school staff were presented with two questionnaire vignettes describing attention seeking and task avoidance behaviour. They were then asked to identify the likely causes of the behaviours. Only a small proportion of participants made accurate causal attributions about the two examples of challenging behaviour. In addition, staff experience had little effect on the accuracy of attributions. Implications for future research, for staff training, and analysis of challenging behaviours are discussed.