![]() ![]() The SDI does not collect personal information, such as age and gender. After publishing a few books in the 1950s and 60s Elias Porter published the Strength Deployment Inventory 2.0. In 1949 Elias Porter began to use Erich Fromms book to validate his use of the personality types present in the book to construct psychometrics. This then blossomed into a 10-year working relationship. He continued this work until the 1940s when he joined with Carl Rogers in order to aid in developing a counseling center in Chicago. In the 1930s Elias Porter introduced the Strength Deployment Inventory into use as an 8-hour test in order to select public service workers for the Oregon State Public Welfare Commission. The Strength Deployment Inventory has roots in psychoanalysis. ![]() SDI results have been shown to have correlations with other assessments, such as the Blue MVS correlating to validated measures of Servant Leadership at the 0.708 level. Scudder's research reported construct validity, concurrent validity, and differential validity. Internal reliability of the scales ranges from 0.710 to 0.846, also Cronbach's alpha. The test-retest reliability for the 6 motive scales on the SDI ranges from 0.81 to 0.91, using the Cronbach's alpha. As well as two views of strengths, the Strengths Portrait and the Overdone Strengths Portrait. Results focus on four key areas: Personality in two conditions, when things are going well and when there is conflict. It is a theory of human motives in relationships. Relationship Awareness Theory is the conceptual foundation of the assessment. ![]()
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