Welcome to the Research Resource Center!

Here, you will find 2 different kinds of research—
Effectiveness Studies and Technical Reports, and Foundational Research. See below to find out more!

• Effectiveness Studies and Technical Reports

  Scientific research conducted to substantiate the efficacy of specific Harcourt Achieve products and reports that contain the scientific or technical attributes of a given product.

• Foundational Research

  A record of the scientific research (experimental and quasi-experimental studies) and practice oriented or action research that shaped the creation of a given Harcourt Achieve product. Online versions of these documents do not contain tables and graphs because of copyright restrictions. Print versions of these materials are available from your local representative.