Description

The Neuroticism-Extraversion-Openness-Five Factor Inventory (NEO-FFI) is a psychometric scale developed to assess the five basic dimensions of personality according to the Five-Factor Model (FFM). The five dimensions are:
Neuroticism
Extraversion
Openness to Experience
Agreeableness
Conscientiousness
The NEO-FFI is a shortened version of the NEO Personality Inventory-Revised (NEO-PI-R) and consists of 60 statements, 12 for each of the five dimensions.

Purpose

The main purpose of the NEO-FFI is to provide a brief yet reliable and valid method for assessing the five major dimensions of personality. It is widely used in psychological research, clinical practice, career counseling, and personal development.

Analysis

The NEO-FFI consists of 60 statements related to the five personality dimensions. Participants are asked to respond to these statements using a five-point Likert scale, ranging from “strongly disagree” to “strongly agree.”
Neuroticism: Assesses emotional stability and the tendency toward negative emotions such as anxiety and depression.
Extraversion: Assesses sociability, energy, and positive emotions.
Openness to Experience: Assesses preference for new experiences, imagination, and intellectual curiosity.
Agreeableness: Assesses the tendency toward cooperation, trust, and altruism.
Conscientiousness: Assesses the tendency toward organization, diligence, and self-discipline.

Scoring

Scoring of the NEO-FFI is done by summing the scores of the responses to the statements related to each of the five dimensions. The total scores for each dimension are calculated by adding up the scores of the corresponding items. These scores can be compared with population norms to determine the individual’s personality profile.

References

Costa, P. T., & McCrae, R. R. (1992). Revised NEO Personality Inventory (NEO PI-R) and NEO Five-Factor Inventory (NEO-FFI) professional manual. Psychological Assessment Resources.
McCrae, R. R., & Costa, P. T. (2004). A contemplated revision of the NEO Five-Factor Inventory. Personality and Individual Differences, 36(3), 587–596.
Terracciano, A., Costa, P. T., & McCrae, R. R. (2006). Personality plasticity after age 30. Personality and Social Psychology Bulletin, 32(8), 999–1009.
Murray, A. L., & Johnson, W. (2013). The limitations of model fit in comparing the bi-factor model of the Autism-Spectrum Quotient to other models. Journal of Autism and Developmental Disorders, 43(10), 2741–2752.