What type of research (analysis) has been performed to determine validity and reliability?
Between 1991 and 1999, Loewen used the TIPP Assessment (the Assessment) and the related strategies in their original form (paper and oral presentation) with over 4,000 individuals. Based on client feedback and success stories, Loewen began assessing the validity of the tool. While observing frequent patterns within individual Assessment results, Loewen began to make informal comparisons between the tool and several well-known personality theories and learning-style perspectives (Jung, Kolb, Gregorc, Dunn, Gardner, etc.). Similarities between the Assessment and other tools (e.g., MBTI, LSI, Gregorc, etc.) became apparent – all measured some sort of human preference, style and/or personal values. Although the character values (cognitive/affective scale) are more easily compared to other tools, the sensory values (physiological scale) set the Assessment apart, making it difficult to validate by simple comparison.
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