Background: The Nisonger Child Behavior Rating Form (NCBRF) allows for the assessment of frequency and severity of challenging behaviours of individuals with ID with one combined rating. However, frequency and severity rating of challenging behaviours may be in disagreement. Therefore, the efficacy of frequency and severity independent ratings for…

This prepost test experimental study examined the effectiveness of an intervention providing information about peers with sensory disability, intellectual disability, and behavioral difficulties (cognitive intervention), an intervention using imagined contact with peers with these disabilities (behavioral intervention), and an intervention…