DISC Stastics - Some Comparison Statistics: Australia vs. New Zealand

Extended DISC® International has the ability to measure and compare reports from around the world, and annually produces a Validation Study.

The main objective of the study is to check internal consistency.  Internal consistency is a measure based on the correlations between different items on the same test (or the same subscale on a larger test).
It measures whether several items that propose to measure the same general construct produce similar scores.  Internal consistency is usually measured with Cronbach’s alpha, a statistic calculated from the pairwise correlations between items.  Internal consistency ranges between zero and one. 

A commonly-accepted rule of thumb is that an alpha of 0.6 to 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 entitrely redundant.

The global Cronbach’s alpha for Extended DISC® Personal Analysis version 2009 (with 2008 in brackets) were:
                 D         .84 (.84)
                 I           .82 (.82)
                 S         .85 (.84)
                 C         .79 (.79)

The results prove that the instrument continues to have very high validity, and as the study we are referring to in this article is based on a sample of 77,811 reports, the results are compelling.
Some statistics we found interesting are:

DISC Distribution

DISC Distribution by Age

To find out more about how Extended DISC can help your business, please contact us at 1800 768 569 our oursite Australia on 61 3103 0177

or emal us.