Extraordinary Reliability You Can Count On
At Taylor Protocols, we have learned that your inner nature truly does not change. We have done many test/retest studies and typically see 94% or higher repeat reliability. This high level of consistency is only possible if the assessment is accurate and if it measures something that is very stable.
The Core Values Index achieves 97.7% repeat reliability—an exceptionally high standard for any assessment. But what does this number actually mean, and why does it matter for you and your organization?
Understanding Repeat Reliability
Repeat reliability measures whether an assessment produces consistent results when the same person takes it multiple times. If you take a personality test today and get completely different results next month, that test isn’t measuring anything stable or meaningful about who you truly are.
The CVI’s 97.7% reliability means that when you take the assessment today and again in five years, your scores will vary by less than 3%. Your core values profile stays essentially unchanged throughout your adult life because the CVI measures something fundamentally different from other assessments.
Why the CVI Achieves Such High Reliability
The CVI achieves its remarkable reliability because it measures something fundamentally different from typical assessments. Most assessments measure personality preferences, behavioral styles, or current tendencies—all things that naturally shift based on mood, circumstances, life stage, and self-perception.
The CVI measures your unchanging inner nature. This is why your results stay consistent whether you take the assessment today, next year, or a decade from now. You’re not measuring how you feel or how you’re currently behaving—you’re measuring who you fundamentally are.
This stability has important practical implications. When you’re making important decisions about career direction, hiring, or team composition, you need insights you can trust over time. The CVI provides that foundation.
Measuring the Unchanging Self
Abraham Maslow called this inner self the “unchanging real self.” It contains your natural ways of thinking, feeling, making decisions, and connecting with others. He proposed that this inner nature stays the same from childhood until death.
The CVI measures this unchanging real self—not your current mood, not your learned behaviors, not how you think you should answer. It captures the fundamental core values that have been with you since birth and will remain constant throughout your life.
We have also shown that the combination of who you are (your unchanging inner self) and what you are (your personality, skills, and talents) determines where you will find work that is fully engaging and fulfilling.
The Science Behind Stability
Lynn Taylor developed the CVI using principles from his work building speech recognition software—a field where precision and consistency aren’t optional. This real-world engineering background, applied to human assessment, is why the CVI achieves measurement consistency that theoretical approaches cannot match.
Unlike subjective personality questionnaires that rely on self-reporting about current behaviors, the CVI uses a forced-choice method that bypasses conscious bias and social desirability effects. This is why the same person, taking the CVI years apart, receives virtually identical results.
Why Reliability Matters for Business
When businesses use low-reliability assessments for hiring decisions, they’re essentially flipping a coin. If an assessment can’t consistently identify who someone truly is, how can it predict job performance or team fit?
The CVI’s extraordinary reliability makes it the foundation for Taylor Protocols’ Top Performer Profile system. Companies using this approach can objectively screen candidates at the very start of the hiring process, dramatically reducing costs while improving productivity and job satisfaction.
Your Unchanging Core
Self-knowledge is the foundation of leadership, top performance, and high contribution. What you don’t know about yourself controls your life. If you don’t know who you are at the deepest level, you cannot fully understand how you operate, what motivates you, what work engages you, or what your highest contribution should be.
The CVI’s 97.7% reliability means the insights you receive are trustworthy, stable, and actionable. You can build your career, relationships, and leadership style on this foundation knowing it reflects your true, unchanging self.
Experience the Difference
Take the assessment trusted by over 1.3 million people and discover insights that will remain true throughout your lifetime.