The Middle Years Development Instrument (MDI) Research Brief
2018 Human Early Learning Partnership
The Middle Years Development Instrument (MDI) is a self-report questionnaire that asks children in middle childhood about their thoughts, feelings and experiences. The MDI is the first survey of its kind to gather information about the lives of children both in school, in the home and in the community, from their own perspective. The survey uses a strengths-based approach to assess five dimensions of child development that are strongly linked to social and emotional well-being, health, academic achievement, and overall success throughout the school years and in later life.