Theorists
Harrison Gough – 1921 2014
A comprehensive academic examination of the life, psychometric innovations, and enduring scientific legacy of psychologist...
# IPAR
2 results
Scales
Rigidity Scale (RI)
The Rigidity Scale (RI), constructed by John M. Rehfisch in 1958, is a prominent 39-item...
September 17, 2026
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Dr. Mohammed Looti