Temporal consistency (a form of test-retest) is one of many forms of reliability that help establish an assessment as fully reliable and valid. This report of 7,742 individuals provides continuing evidence of temporal consistency, which adds to the argument that the TTI SI Styles Insights assessment has test-retest reliability.
This test-retest pilot study included 86 participants who took the behavioral assessment twice with an average separation of 38 days. The comparison showed no significant difference in the two reports and reliability was above 0.8 on both natural and adapted constructs.
The purpose of this study is to compare the constructs of the TTI SI Style Insights®️ DISC model and the Thomas Personal Profile Analysis (PPA) assessment. The results of the comparison show strong correlations between the major scales of the Style Insights and PPA.