Description

The International Personality Item Pool – Johnson (IPIP-J) is a version of the IPIP, designed and developed by John A. Johnson. This scale uses a series of questions to assess personality based on the Five-Factor Model (FFM).

Purpose

The main goal of the IPIP-J is to provide a user-friendly, reliable, and valid tool for measuring the five major dimensions of personality, which include:
Extraversion
Agreeableness
Conscientiousness
Emotional Stability
Openness to Experience
The IPIP-J scale is often used in psychological research and assessments to examine the personality of individuals in various contexts, such as educational and professional settings.

Analysis

The analysis of IPIP-J data involves evaluating participants’ responses to a series of statements. These statements are based on a Likert scale, where participants indicate how much they agree or disagree with each statement.
The steps of analysis include:
Response Collection: Participants respond to each statement based on how much they agree or disagree with it.
Subscale Calculation: Responses for each dimension are summarized to yield a score for each of the five dimensions.
Overall Scoring: The overall scores for each dimension are compared with population norms to determine where the individual stands relative to the general population.

Scoring

The scoring of the IPIP-J is done by assigning values to participants’ responses to each statement. The total scores for each dimension are calculated by adding the scores of the individual statements belonging to that dimension. Average scores can then be compared with population norms to determine where an individual stands relative to the general population.

References

Goldberg, L. R., Johnson, J. A., Eber, H. W., Hogan, R., Ashton, M. C., Cloninger, C. R., & Gough, H. G. (2006). The International Personality Item Pool and the future of public-domain personality measures. Journal of Research in Personality, 40(1), 84–96.
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.
Maples, J. L., Guan, L., Carter, N. T., & Miller, J. D. (2014). A test of the International Personality Item Pool representation of the Revised NEO Personality Inventory and development of a 120-item IPIP-based measure of the Five-Factor Model. Psychological Assessment, 26(4), 1070–1084.