Frequently Asked Questions about the
Middle Years Development Instrument
The Middle Years Development Instrument (MDI) was developed in 2006 by a University of British Columbia (UBC) research team led by Dr. Kim Schonert-Reichl. The MDI was developed to provide a standardized, reliable method of measuring the full complexity of middle childhood well-being using the five dimensions.
The instrument was created through a collaborative process with scientific experts, community members, educators and children. You can read more about the pilot study that led to the MDI, and see the current questionnaire in full.