Revealing interdyad differences in naturally occurring staff reactions to challenging behaviour of clients with severe or profound intellectual disabilities by means of Clusterwise Hierarchical Classes Analysis (HICLAS)
1. Methodology of Educational Sciences Research Group, Psychology and Educational Sciences, KU Leuven, , Leuven, Belgium;2. Parenting and Special Education Research Unit, Psychology and Educational Sciences, KU Leuven, , Leuven, Belgium