Validation
The Validation Process
Extended DISC International is a proud provider of validated high-class instruments.Our annual validation report summarizes the study of the Extended DISC® instrument and the four key dimensions which it assesses (Dominance, Influence, Steadiness and Compliance). Reliability and validity characteristics of the Extended DISC® System are analyzed by using various statistical methods.
Summary of latest Validation Report
The population was collected from the users of the Extended DISC® System, representing all nationalities the company (Extended DISC International) has representation offices in. The population also represents all the age groups, genders, organization types and levels and races in the same ratio it is designed to be used. The total population used for the research was 77.811 (in 2009). The size of the main comparison population (2008 validation population) was 63.684.
Reliability and Validity of Extended DISC® Personal Analysis. Internal consistency is usually measured with Cronbach's alpha (ranges between 0-1) .A 0.6-0.7 indicates acceptable reliability, and 0.8 or higher indicates good reliability. High reliabilities (0.95 or higher) are not necessarily desirable, as this indicates that the items may be entirely redundant. The global Cronbach’s alpha for Extended DISC® Personal Analysis version 2009 is:
D - 0.84 I - 0.82S - 0.85 C - 0.79
The results prove that the instrument continues having a very high validity.
Global DISC distribution
The stability of the instrument supports the claim that the instrument has been able to maintain its reliability. On business side the study shows that finding a person with a natural D behavior becomes more challenging with years. Similarly the likelihood of person with C trait as the main one is also decreasing in the global population.
Contact us to receive a summary report with Research Finding from latest annual Extended DISC Validation Report.
