Validity & reliability of the Harthill LDP
The validity of the Harthill LDP is based on more than 50 years of research. Below are a number of published articles that illustrate the research findings.
A Summary of the Validity & Reliability of the Harthill LDP
Herdman-Barker, Rooke & Torbert (2009)
Provides up to date composite overviews of issues relating to validity & reliability of the Harthill LDP with historical reference to the field of constructivist adult development measures.
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Reliability and Validity Test of the Harthill Leadership Development Profile
Torbert & Livne-Tarandach, Integral Review (2009)
Describes how the Harthill Leadership Development Profile (LDP) has evolved from Loevinger's Washington University Sentence Completion Test (WUSCT), and has been redesigned to assess and offer feedback about adults' Action Logics in work or educational settings.
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Generating & Measuring Practical Differences in Leadership Performance
Herdman-Barker and Torbert (2008) SUNY Academic Press
An informal narrative on the historical basis of our work, the evloution of Loevinger's Sentence Completion Test to Harthill Leadership Development Profile and new understandings of post-conventional leadership based on current studies.
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