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International Personality Item Pool Representation of the NEO PI-R® 120

International Personality Item Pool Representation of the NEO PI-R® 120

What is IPIP-NEO-120

IPIP-NEO-120 is a publically available representation of five domains and 30 facets of the Five Factor Model (Neuroticism, Extraversion, Openness, Agreeableness, and Conscientiousness), drawing 120 items from the International Personality Item Pool.

IPIP-NEO-120 Printable PDF

You can create a free account on PsyPack to access fillable PDFs, manuals and educational resources for the IPIP-NEO-120

IPIP-NEO-120 Scoring and Interpretation

The scoring and narrative report routines for these items were created by Dr. John A. Johnson, Professor of Psychology, Penn State University.

Dr. John A. Johnson’s IPIP-NEO Data Repository on the Open Science Framework: https://osf.io/tbmh5/.

Development of the IPIP-NEO-120 and its reliability and validity are described in the following publication:

Johnson, J. A. (2014). Measuring thirty facets of the five factor model with a 120-item public domain inventory: Development of the IPIP-NEO-120. Journal of Research in Personality, 51, 78-89. https://doi.org/10.1016/j.jrp.2014.05.003

Here is how to score IPIP scales:

For + keyed items, the response "Very Inaccurate" is assigned a value of 1, "Moderately Inaccurate" a value of 2, "Neither Inaccurate nor Accurate" a 3, "Moderately Accurate" a 4, and "Very Accurate" a value of 5.

For - keyed items, the response "Very Inaccurate" is assigned a value of 5, "Moderately Inaccurate" a value of 4, "Neither Inaccurate nor Accurate" a 3, "Moderately Accurate" a 2, and "Very Accurate" a value of 1.

Once numbers are assigned for all of the items in the scale, just sum all the values to obtain a total scale score.

The "pattern types" are based on Hofstee, De Raade, and Goldberg's AB5C model of personality. A person's two most extreme scores (high or low) determined their pattern.

The computer program that generates this report classifies you as low, average, or high in a trait according to whether your score is approximately in the lowest 30%, middle 40%, or highest 30% of scores obtained by people of your sex and roughly your age. Your numerical scores are reported and graphed as percentile estimates. For example, a score of "60" means that your level on that trait is estimated to be higher than 60% of persons of your sex and age.

John A. Johnson wrote descriptions of the five domains and thirty subdomains. These descriptions are based on an extensive reading of the scientific literature on personality measurement.

PsyPack can automatically score the IPIP-NEO-120 assessment and prepare corresponding tables and graphs.

IPIP-NEO-120 sample result

Sample Report of IPIP-NEO-120

Domain

Personality

What does IPIP-NEO-120 measure

The purpose of the evaluation is to:

  • estimate standing on the 5 broad domains and 30 subdomains of personality.

Administration

Self-administered

Type of outcome tool

Clinical

Assessment modes

Questionnaire

Age and eligibility

10 years and above

Estimated time

10-20 minutes

Notes

  • This inventory estimates client's standing on the 5 broad domains and 30 subdomains of personality.
  • The inventory does not reveal hidden, secret information about the client nor does it assess serious psychological disorders.
  • The report is designed to be objective, not pleasing or flattering.
  • Personality traits describe, relative to other people, the frequency or intensity of a person's feelings, thoughts, or behaviors. Possession of a trait is therefore a matter of degree. We might describe two individuals as extraverts, but still see one as more extraverted than the other. This report uses expressions such as "extravert" or "high in extraversion" to describe someone who is likely to be seen by others as relatively extraverted.
  • Please keep in mind that "low," "average," and "high" scores on a personality test are neither absolutely good nor bad. A particular level on any trait will probably be neutral or irrelevant for a great many activities, be helpful for accomplishing some things, and detrimental for accomplishing other things.
  • As with any personality inventory, scores and descriptions can only approximate an individual's actual personality.
  • High and low score descriptions are usually accurate, but average scores close to the low or high boundaries might misclassify client as only average. On each set of six subdomain scales it is somewhat uncommon but certainly possible to score high in some of the subdomains and low in the others. In such cases more attention should be paid to the subdomain scores than to the broad domain score.
  • Measurement error, misunderstandings, carelessness, and mischievous responding can invalidate the report.
  • Questions about the accuracy of your results are best resolved by showing your report to people who know you well.
  • If knowledgeable acquaintances disagree with the test results, then the results are wrong.

Note: The scoring tools/norms used for this report is obtained from https://osf.io/jxpu4/.

Attribution and References

Johnson, J. A. (2014). Measuring thirty facets of the Five Factor Model with a 120-item public domain inventory: Development of the IPIP-NEO-120. Journal of Research in Personality, 51, 78-89.

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