VIA Inventory of Strengths (VIA-IS)

Classification of strengths

  1. Wisdom and Knowledge: creativity, curiosity, judgment, love of learning, perspective
  2. Courage: bravery, perseverance, honesty, zest
  3. Humanity: love, kindness, social intelligence
  4. Justice: teamwork, fairness, leadership
  5. Temperance: forgiveness, humility, prudence, self-regulation
  6. Transcendence: appreciation of beauty and excellence, gratitude, hope, humor, spirituality[3]

The VIA Inventory of Strengths (VIA-IS), formerly known as the “Values in Action Inventory,” is a psychological assessment measure designed to identify an individual’s profile of character strengths. It was created by Christopher Peterson and Martin Seligman, well-known researchers in the field of positive psychology, in order to operationalize theirCharacter Strengths and Virtues Handbook (CSV).[1] The CSV is the positive psychology counterpart to the Diagnostic and Statistical Manual of Mental Disorders (DSM) used in traditional psychology.[1] Unlike the DSM, which scientifically categorizes human deficits and disorders, the CSV classifies positive human strengths.[2] Moreover, the CSV is centered on helping people recognize and build upon their strengths. This aligned with the overall goal of the positive psychology movement, which aims to make people’s lives more fulfilling, rather than simply treating mental illness.[2] Notably, the VIA-IS is the tool by which people can identify their own positive strengths and learn how to capitalize on them.[2]

As a relatively new field of research, positive psychology lacked a common vocabulary for discussing measurable positive traits before 2004.[1] Traditional psychology benefited from the creation of DSM, as it provided researchers and clinicians with the same set of language from which they could talk about the negative. As a first step in remedying this disparity between tradition and positive psychology, Peterson and Seligman set out to identify, organize and measure character.

Peterson & Seligman began by defining the notion of character as traits that are possessed by an individual and are stable over time, but can still be impacted by setting and thus are subject to change.[1] The researchers then started the process of identifying character strengths and virtues by brainstorming with a group of noted positive psychology scholars. Then, Peterson & Seligman examined ancient cultures (including their religions, politics, education and philosophies) for information about how people in the past construed human virtue. The researchers looked for virtues that were present across cultures and time. Six core virtues emerged from their analysis: courage, justice, humanity, temperance, transcendence and wisdom.

Next, Peterson and Seligman proposed a model of classification which includes horizontal and vertical components. The hierarchical system is modeled after the Linnaean classification of species, which ranges from a specific species to more general and broad categories. The scientists stated the six core values are the broadest category and are, “core characteristics valued by moral philosophers and religious thinkers” (p. 13).[1] Peterson and Seligman then moved down the hierarchy to identifying character strengths, which are, “the psychological processes or mechanisms that define the virtues” (p. 13).[1]

The researchers began the process of identifying individual character strengths by brainstorming with a group of noted positive psychology scholars.[1] This exercise generated a list of human strengths, which were helpful when consulting with Gallup Organization. Peterson and Seligman then performed an exhaustive literature search for work that directly addresses good character in the domains of, “psychiatry, youth development, philosophy and psychology” (p. 15). Some individuals who influenced Peterson and Seligman’s choice of strengths include: Abraham Maslow, Erik Erikson, Ellen Greenberger, Marie Jahoda, Carol Ryff, Michael Cawley, Howard Gardner, Shalom Schwartz. In an effort to leave no stone unturned, the researchers also looked for virtue-laden messages in popular culture. For example, the researchers examined Hallmark greeting cards, personal ads, graffiti, bumper stickers and profiles of Pokémon characters.

After identifying dozens of ‘candidate strengths’, the researchers needed to find a way to further refine their list. Therefore, Peterson & Seligman developed a list of 10 criteria (e.g., strengths must contribute to a sense of a fulfilling life, must be intrinsically valuable) to help them select the final 24 strengths for the CSV (see CSV for complete list of criteria). Approximately half of the strengths included in the CSV meet all 10 criteria, and half do not.[1] By looking for similarities between candidate strengths, the researchers distributed 24 character strengths between six virtue categories. Only after creating this a priori organization of traits, the researchers performed, “an exploratory factor analysis of scale scores using varimax rotation,” (p. 632) from which five factors emerged.[1] Peterson & Seligman state that they are not as concerned with how the 24 strengths are grouped into virtue clusters because, in the end, these traits are mixed together to form the character of a person.

Only 3 studies have checked the factor structure of the CSV, on which the VIA-IS is based.[1][9][10]

Using a second order factor analysis, Macdonald & colleagues (2008) found that the 24 strengths did not fit into the 6 higher order virtues model proposed in the CSV. None of the clusters of characters strengths that they found resembled the structure of the 6 virtue clusters of strengths. The researchers noted that many of the VIA character strengths cross-loaded onto multiple factors. Rather, the strengths were best represented by a one and four factor model. A one factor model would mean that the strengths are best accounted for by, “one overarching factor,” such as a global trait of character (p. 797).[9] A four factor model more closely resembles the ‘Big Five’ model of personality. The character strengths in the four factor model could be organized into the following four groups: Niceness, Positivity, Intellect and Conscientiousness.

Peterson and Seligman (2004) conducted a factor analysis and found that a five factor model, rather than their 6 hierarchical virtues model, best organized the strengths. Their study, however, did not include five of the character strengths in the results of their analysis. The researchers most likely did this because their results were plagued by the problem of strengths cross-loading on to multiple factors, similar to what occurred in Macdonald and colleagues (2008) study.[10] Clearly, empirical evidence casts doubt on the link proposed by Peterson & Seligman (2004) between the 24 strengths and associated 6 higher order virtues.

Brdar & Kashdan (2009) used more precise statistical tools to build upon the findings of the two earlier studies. They found that a four factor model (Interpersonal Strengths, Vitality, Fortitude and Cautiousness) explained 60% of the variance. One large, overarching factor explained 50% of the variance. The four factors found by Brdar and Kashdan (2009) are similar to the four factors found by Macdonald and colleagues (2008). Once again, the Brdar and Kashdan found that the 24 strengths did not fall into the 6 higher order virtues proposed by Peterson and Seligman (2004). The correlations found between many of the strengths demonstrates that each strength is not distinct, which contradicts the claims made by the creators of the VIA-IS.

Caution should be taken in interpreting the results from these three studies as their samples differ in age and country of origin.[10]


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