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Cohort Profile: Quebec Longitudinal Study of Child Development (QLSCD)
Massimiliano Orri1,2, Michel Boivin3, Chelsea Chen4
1McGill Group for Suicide Studies, Department of Psychiatry, Department, Montreal, Douglas Mental Health University Institute, McGill University, Frank B. Common Pavilion, F-2101 6875 LaSalle Boulevard, Montreal, QC, H4H 1R3, Canada.
Social Psychiatry and Psychiatric Epidemiology
|November 13, 2020
Summary
The Quebec Longitudinal Study of Child Development (QLSCD) tracks early development, revealing how preschool factors influence long-term biopsychosocial health through adolescence and young adulthood.
Area of Science:
- Developmental Psychology
- Child Health Research
- Longitudinal Studies
Background:
- The Quebec Longitudinal Study of Child Development (QLSCD) is a prospective cohort study.
- It tracks biopsychosocial development from infancy through young adulthood.
- The study examines the long-term impact of early childhood experiences.
Purpose of the Study:
- To investigate associations between preschool development (physical, cognitive, social, emotional) and later biopsychosocial outcomes.
- To understand developmental trajectories across childhood, adolescence, and young adulthood.
- To identify early predictors of mental health and behavioral issues.
Main Methods:
- Prospective cohort design with 2120 singletons born in 1997/1998 in Quebec.
- Annual or biennial data collection from 5 months to 21 years of age.
- Inclusion of diverse data: environmental, biological (hair cortisol, genetics), and administrative.
Main Results:
- QLSCD research has elucidated the development of physical aggression and anxiety.
- Studies show early childcare participation impacts cognitive and behavioral development.
- The study identified developmental origins of adolescent/young adult mental health problems and suicide risk.
Conclusions:
- QLSCD significantly advances understanding of child development and lifelong biopsychosocial outcomes.
- Unique strengths include integrated environmental, biological, and administrative data.
- Long-term follow-up with multi-informant data collection (teachers, parents, children) provides comprehensive insights.
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