Principal Investigator Jorge Delva
Professor and Associate Dean 
University of Michigan, School of Social Work
Co-investigator Andrew Grogan-Kaylor
Associate Professor 
University of Michigan, School of Social Work
Funder National Institute on Drug Abuse (NIDA)


The Santiago Longitudinal Study was a NIDA funded RO1 project of over 1,000 adolescents in Santiago, Chile.  The study investigated the relationships between substance use, health, mental health, parenting, family dynamics and community characteristics.  The study built upon the research of another U-M and University of Chile collaborative project that is analyzing the behavioral and developmental effects of preventing iron deficiency anemia in infancy.  That study, funded by NICHD, is led by Betsy Lozoff, professor in the Department of Pediatrics and Communicable Diseases at UM, and Marcela Castillo, assistant professor at the Institute on Nutrition and Food Technology at the University of Chile.


A study workgroup led by Delva and Grogan-Kaylor, met regularly to:

  • plan statistical analyses
  • discuss theoretical and conceptual issues 
  • work on papers to submit to academic journals
  • develop presentations for local, state, national and international conferences
Members of the SLS continue to meet to work on selected academic papers resulting from the SLS.