ABOUT THE MIDDLE YEARS DEVELOPMENT INSTRUMENT (MDI)
The Middle Years Development Instrument (MDI) is a self-report questionnaire that asks children in Grade 4 and Grade 7 about their thoughts, feelings and experiences in school and in the community. The MDI is not an assessment for individual children. Instead, it is a unique and comprehensive population-based
measure that helps us gain a deeper understanding of children’s health and well-being during middle childhood. Researchers at the Human Early Learning Partnership (HELP) are using results from the MDI to understand the factors that promote children’s social-emotional health and well-being. In addition, the MDI is being used to inform policy and practice and support collaboration across education, health and community sectors.
– from the Introduction