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Sarah A. AvellarSarah A. Avellar
Senior Researcher

Sarah Avellar is a senior researcher whose research interests include early childhood, education, and family support.

Currently, she is a co-principal investigator for the Home Visiting Evidence of Effectiveness Review. This project will conduct a thorough and transparent review of the home visiting research literature to provide guidance to states as they develop applications for the home visiting funds. The health care reform legislation includes funds for home visiting, with most of the funds going to evidence-based approaches.

Avellar is the deputy project director of the National Title I Study of the Implementation and Outcomes: Early Childhood Language Development, a five-year project designed to identify school programs and teaching practices associated with the development of children’s reading comprehension achievement in prekindergarten through third grade. The project will assess children’s growth in language development and background knowledge and develop observational measures of teacher practices that are expected to support this development.


She also is involved in many aspects of the What Works Clearinghouse (WWC), which reviews and synthesizes scientific research on education. She leads the training and certification of WWC reviewers for group design standards. She is the deputy principal investigator in two areas: Early Childhood Education and Early Childhood Education for Children with Disabilities.


Avellar joined Mathematica in 2004. She is a reviewer for the Journal of Marriage and Family, Demography, Journal of Family Issues, and The Sociological Quarterly. She holds a Ph.D. in sociology from the University of Michigan.

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Staff Profile

  • Areas of Expertise
  • Key Projects
  • Professional Activities
  • Publications
  • Early Childhood
  • Education
  • Family Support
  • Member, American Sociological Association
  • Member, Population Association of America