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Measuring Your Strengths: The VIA-IS Survey

Everything about the VIA Survey: what it measures, how it works, psychometric reliability, free vs paid versions, how to take the test, and interpreting your results.

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The VIA Survey: a science-based tool

The VIA-IS (Values in Action Inventory of Strengths) is the official questionnaire developed by Martin Seligman and Christopher Peterson to measure the 24 character strengths of the VIA model. Since its launch in 2002, it has been completed by more than 15 million people worldwide and translated into over 40 languages.

This is not a magazine quiz. It is a psychometric instrument built to scientific psychology standards — with validation studies, reliability analyses, and continuous revisions based on collected data.


What the VIA measures (and what it does not)

What it measures

The VIA-IS measures the subjective value you assign to each strength in your life — how much you feel this strength represents you, energizes you, and expresses itself naturally in your behavior.

It is not a competence test. It does not measure whether you "know how" to be curious or kind. It measures whether you identify with this strength and whether it manifests spontaneously in your life.

What it does not measure

  • Your competencies: being high in Creativity does not mean you are objectively "good" at creative domains
  • How others perceive you: it is a self-report — your answers reflect your self-perception
  • What you should be: there are no "right" answers in the questionnaire
  • A fixed trait for life: your strengths can evolve through experience and deliberate choices

Structure of the questionnaire

The full VIA-IS

  • 96 items (4 items per strength, 24 strengths)
  • Time: 10 to 15 minutes
  • Format: statements on a scale from 1 ("Not like me at all") to 5 ("Very much like me")
  • Example item: "I am always curious about the world."

The brief VIA-IS

  • 24 items (1 item per strength)
  • Time: 3 to 5 minutes
  • Use: quick screens, beginners
  • Limitation: less reliable than the full version — use for initial exploration only

The VIA Youth Survey

Adapted version for children and adolescents (ages 10 to 17). Simplified language, items adjusted to the developmental context.


Psychometric reliability and validity

For a psychometric instrument, two qualities are essential: reliability (precision) and validity (does it measure what it claims to measure?).

Reliability

Internal reliability (consistency among items of the same scale) is measured by Cronbach's alpha. For the VIA-IS:

  • Overall internal reliability: very good (alpha generally above 0.70 for most strengths)
  • Test-retest stability: scores are relatively stable over 4 weeks — suggesting that strengths measure something relatively enduring

Validity

The VIA-IS shows:

  • Construct validity: strengths correlate with theoretically expected constructs (e.g., Gratitude correlating with subjective happiness)
  • Predictive validity: strengths predict important outcomes (well-being, work engagement, relationship satisfaction)
  • Factor structure: the 24 strengths cluster into 6 factors corresponding to the 6 virtues, with some variation across studies

Recognized limitations

  • Social desirability bias: some people respond based on what they think is socially valued rather than their actual experience
  • Self-perception vs external observation: how you perceive yourself may differ from how you actually behave
  • Context-dependence: your strengths express differently across different life contexts

Free vs paid versions

Free version (recommended to start)

Available at viacharacter.org. It includes:

  • Your complete ranking of all 24 strengths (highest to lowest)
  • A brief description of each strength
  • Identification of your top 5 strengths (signature)

This is generally sufficient to start working with your strengths.

Paid versions (in-depth reports)

VIA Institute offers several premium reports. The most useful:

VIA Pro Report (approximately 20 USD):

  • Detailed analysis of each strength
  • Overuse / underuse sections
  • Concrete suggestions for each strength
  • Comparison with the global sample average

VIA Me Report:

  • More visual, action-oriented
  • Good for beginners or those who prefer a less academic presentation

VIA Strengths Profile:

  • Aggregated view of your strength profile
  • Useful for professionals or coaches

Recommendation: start with the free version. If you want to work in depth with your strengths — in coaching, therapy, or professional development — the Pro report offers genuine added value.


How to take the questionnaire

Optimal conditions

  1. Choose a quiet moment: not while commuting, not between tasks. 15 minutes of focus.

  2. Answer with your life as a whole: not just at work, not just on vacation. How are you in general?

  3. Go with first impressions: do not over-analyze each question. Your first reaction is often the most revealing.

  4. Be honest, not ideal: do not answer based on who you would like to be. Answer based on who you are right now.

  5. Avoid "right answer" mode: there are no good or bad strengths. High Prudence is not "less valuable" than high Zest.


Interpreting your results

Your top 5 strengths — your signature strengths

These are your highest-ranked strengths. They deserve your primary attention. Ask yourself the three signature strength questions:

  • Does this feel genuinely like me?
  • Does it energize me?
  • Does it manifest naturally?

If the answer is yes to all three, it is a confirmed signature strength.

The middle strengths

Strengths ranked 6th through 18th are your supporting strengths — present and useful, but less central to your identity. Worth knowing and using, but not your priority.

The lower strengths — not flaws, not weaknesses

Your lowest-ranked strengths are not your "weaknesses." They are simply the strengths that represent you least — for now, in your current life. They may also indicate potential areas for growth.

Important: "having Zest ranked 22nd" does not mean you lack energy. It means this particular mode of expressing energy is not your dominant one.

Comparing to the global norm

VIA Institute holds data from 15 million people. Some reports let you see whether your score on a strength is high, average, or low compared to the global population. This is contextualizing information — not a value judgment.


Retaking the test

The VIA-IS is not a one-time test to archive. It is useful to retake it:

  • After major life transitions (change of life circumstances, work, relationships)
  • After intentional work on certain strengths (to see whether use has increased)
  • Every 2 to 3 years in general, to track evolution

If your results change significantly between two close administrations without an apparent reason, this may indicate that you responded differently depending on your mood or context — which is normal, but worth noting.


The survey as a starting point

The VIA Survey is a tool, not an absolute truth. It gives you a reliable starting point for exploring who you are at your best — but understanding your strengths builds over time, through observation and experimentation.

The questionnaire may confirm what you already know. It may also surprise you — and those surprises are often worth exploring.

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