May 14, 2020
The 2017 Motivation Insights Reliability Study is an internal consistency reliability study and is part of TTI SI’s ongoing continuous improvement process. This study uses a measurement of reliability called the Cronbach’s α (alpha). Cronbach’s α is a measure of the lower bound estimate of the reliability of a psychometric assessment. Cronbach’s α is a scalar taking values between 0 and 1, inclusive. Generally speaking, the closer the score is to one, the more reliable an assessment may be considered. The scales for the Motivation Insights are labeled Theoretical, Utilitarian, Aesthetic, Social, Individualistic, and Traditional.
Sep 3, 2019
In many cases, organization such as the American Psychological Association, provide general guidelines without providing specific guidance. As an example, we discuss the concepts of acceptable levels of reliability coefficients, as measured by the so-called “alpha” coefficients where after several decades there remains a lack of consensus.
May 8, 2019
The follow-on article discusses the specifics of the TTI Success Insights approach to addressing the American Psychological Association’s (APA) viewpoints toward and suggestions for measuring critical components of our assessments. The paper focuses on defining and explaining how TTISI is collecting evidence of validity and reliability.
Apr 23, 2019
This paper provides a brief introduction to item response theory, presents a short list of several popular item response theory models, and gives a brief snapshot of the results of the graded response model applied to the TTI Success Insights EQ assessment.
Apr 11, 2019
The EQ technical manual contains information on the history and development of emotional intelligence from its beginnings to the current implementation of the concepts as psychometric assessments. Included in this manual are a host of statistical and psychometric analyses used to establish evidence of the validity and reliability of the TTI Success Insights EQ assessment.
Apr 3, 2019
This 2017 report takes our reliability to a new level by incorporating reliability, means and gender groupings on behaviors, motivators and driving forces for 19 different languages.
Apr 3, 2019
This externally reviewed in-depth study provides statistical evidence of reliability for 20 different behavior and motivator assessment languages.
Apr 3, 2019
One of the major challenges of a company such as TTI Success Insights is to address the rigorous demands of the academic professional world as it relates to acceptably valid and reliable assessments. This short exposé attempts to place in a concise form the current view of the American Psychological Association (APA) on the evidence of validity and reliability as presented in the Handbook of Testing and Assessment in Psychology, Volume 1: Test Theory and Testing and Assessment in Industrial and Organizational Psychology.
