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Validation study

Scientific review of the reliability and accuracy of the Voice Your Future voice assessment

Amsterdam UMC Validatiestudie stem-assessment Voice Your Future

Amsterdam, July 23, 2024

A revolution in assessments through groundbreaking voice analysis!

We are proud to introduce the world’s first validated voice-based assessment—your voice alone is enough to generate a comprehensive, objective report.


After a validation study by researchers at Amsterdam UMC, Voice Your Future proudly launches the world’s first voice-based assessment. Just count to 100 and receive a comprehensive, objective personality report—with insights into your traits, motivations, learning style, career fit, and key competencies.


“The positive results from the scientific validation study, conducted by researchers at Amsterdam UMC, are a breakthrough,” says Gusta Timmermans, founder of Voice Your Future. “This paves the way for a new era in personality testing and self-understanding—made possible by the natural and accessible interface of the human voice.”


Researchers at Amsterdam UMC confirmed strong results for the reliability and accuracy of our voice assessment. The main findings include:

  • Voice and science: 13 scientific studies confirm the potential of voice analysis in predicting psychological and behavioral characteristics.
  • Results showed up to 92% reproducibility—significantly higher than the 11% baseline.
  • Gebruikers zijn zeer tevreden over de bruikbaarheid en nauwkeurigheid van het assessment.
  • Traditional assessments are perceived as time-consuming and susceptible to bias—voice analysis provides a more objective and efficient alternative.
  • The recommendations provided by researchers have already been incorporated by Voice Your Future.

The voice assessment aligns with Timmermans’ mission:
“We believe in a fair and equal world where everyone can be their best self. We provide objective insights that empower you to make self-aware choices and fully develop your potential—regardless of your background, ethnicity, education, or age.”

Combining user-friendliness with scientific accuracy, this one-of-a-kind voice assessment is a trusted resource for personal growth and career development.


Amsterdam UMC’s research report underscores the value of voice analysis for both clinical use and broader applications like HR and personal growth.


The assessment supports recruitment, personal and team development, leadership programs, reintegration, and employee retention—offering organizations a fair and inclusive approach to selection and growth.


Curious to know more?
Contact Gusta Timmermans – Founder Voice Your Future
info@voiceyourfuture.com