Overview

The NEO Five-Factor Inventory (NEO-FFI-60), Form S is a concise self-report psychometric instrument developed by Costa and McCrae to assess the five major dimensions of personality as described by the Five-Factor Model (FFM), also known as the Big Five model of personality. It represents the abbreviated version of the NEO Personality Inventory-Revised (NEO PI-R) and provides a rapid yet comprehensive assessment of stable personality traits that influence cognition, emotion, motivation, and behavior throughout the lifespan.

The Five-Factor Model is one of the most extensively validated theories of personality in contemporary psychology and has demonstrated remarkable cross-cultural stability and predictive validity. The NEO-FFI-60 measures five broad personality domains—Neuroticism, Extraversion, Openness to Experience, Agreeableness, and Conscientiousness—which collectively describe the major dimensions of normal personality. Owing to its strong theoretical foundation and excellent psychometric properties, the instrument has become one of the most widely used personality assessments in clinical psychology, psychiatry, organizational psychology, educational research, health sciences, behavioral medicine, and personality research.

Objective

The primary objective of the NEO Five-Factor Inventory (NEO-FFI-60) is to provide a reliable, valid, and efficient assessment of the five fundamental dimensions of personality, enabling researchers and clinicians to evaluate stable individual differences that influence psychological functioning and behavioral outcomes.

More specifically, the NEO-FFI-60 is designed to:

  • Assess the five broad domains of personality according to the Five-Factor Model.
  • Generate an individual personality profile based on standardized personality traits.
  • Support psychological assessment, counseling, and clinical decision-making.
  • Investigate associations between personality traits and mental health, physical health, academic achievement, occupational performance, and interpersonal functioning.
  • Facilitate research across diverse cultural, educational, occupational, and clinical populations.

NEO Five-Factor Inventory [NEO-FFI]

Description

The NEO Five-Factor Inventory (NEO-FFI), Form S is a brief personality assessment instrument derived from the broader NEO Personality Inventory. It is based on the Five-Factor Model (FFM) and was developed to provide a concise assessment of major and relatively stable personality characteristics.

The instrument assesses five core personality dimensions: Neuroticism, Extraversion, Openness to Experience, Agreeableness, and Conscientiousness.

Aim

The primary aim of the NEO-FFI is to provide a systematic and relatively brief assessment of an individual’s personality profile according to the Five-Factor Model.

Its use allows the identification of individual differences in important areas of personality, including emotional stability, sociability, openness to new experiences, interpersonal orientation, organization, and self-discipline.

The Five Personality Factors

Neuroticism refers to the tendency to experience negative emotions such as anxiety, worry, emotional instability, and psychological distress.

Extraversion is associated with sociability, activity, positive emotionality, and a tendency to seek interpersonal interaction.

Openness to Experience reflects curiosity, imagination, broad interests, and willingness to explore new ideas and experiences.

Agreeableness refers to characteristics such as trust, cooperation, empathy, and a generally positive interpersonal orientation.

Conscientiousness is associated with responsibility, organization, self-discipline, persistence, and goal-directed behavior.

Structure and Scoring

The NEO-FFI consists of 60 statements, distributed across the five major personality dimensions. Each dimension is represented by 12 items.

Responses are provided on a five-point Likert scale, ranging from:

0 = Strongly disagree
to
4 = Strongly agree.

Scores are calculated separately for each of the five personality dimensions, resulting in a concise but multidimensional personality profile.

Administration and Interpretation

The questionnaire is intended primarily for adults and can be administered either individually or in groups. Interpretation is based on the score obtained for each of the five personality dimensions and may be conducted using appropriate normative reference data.

The NEO-FFI does not provide a single overall personality score. Instead, it generates a profile that reflects the relative level of each personality characteristic, thereby supporting a broader understanding of individual differences.

Validity and Reliability

According to the source material, the NEO-FFI demonstrates adequate construct validity and good discriminant validity across its subscales.

Its internal consistency has also been reported as satisfactory, with Cronbach’s alpha coefficients ranging from 0.64 to 0.85. These findings support the reliability of the instrument for assessing the five major personality dimensions.

Greek Adaptation

According to the available source, the NEO-FFI has been translated and adapted into Greek by Dimitriadou and Stalikas, using an independent back-translation procedure.

The availability of a Greek adaptation facilitates the use of the instrument in Greek-speaking populations, particularly in research settings where the basic dimensions of personality need to be assessed in a standardized manner.

Applications

The NEO-FFI can be used in personality research, psychological assessment, counseling, and related applied or research settings.

Its relatively short format makes it particularly useful when an assessment of the Big Five is required without the greater time burden associated with longer personality inventories.

The instrument may also be used to examine relationships between personality traits and variables such as psychological well-being, quality of life, occupational behavior, coping strategies, social functioning, and other psychosocial outcomes.

Conclusions

The NEO Five-Factor Inventory (NEO-FFI) is a widely used and relatively brief instrument for assessing the five major dimensions of personality. Its 60-item structure allows researchers and practitioners to obtain a concise personality profile while maintaining the multidimensional theoretical framework of the Five-Factor Model.

The availability of a Greek adaptation further supports its potential application in Greek-speaking populations, especially in research contexts where a brief but systematic assessment of major personality traits is required.

References

McCrae, R. R., & Costa, P. T. Jr. (2004). A contemplated revision of the NEO Five-Factor Inventory. Personality and Individual Differences, 36(3), 587–596.

Costa, P. T. Jr., & McCrae, R. R. (1992). NEO PI-R Professional Manual. Psychological Assessment Resources.

Greek adaptation: D. Dimitriadou & A. Stalikas.Dimitriadou, D., & Stalikas, A. Greek adaptation of the NEO Five-Factor Inventory (NEO-FFI). (Greek translation using the independent back-translation procedure).