Factors predicting school staff's responsivity toward students with intellectual and developmental disability and complex communication needs.

Background: Children with significant intellectual and developmental disabilities (IDD) are characterized by substantial language delays. Responsivity, the quantity and quality of the communication partner's responses to child's behaviors, is a key component in communication development.

Aims: The aim of the study was to map multidimensional factors predicting school staff's responsivity toward communication of students with IDD with complex communication needs.