International Personality Item Pool – Five Factor Model – 50 (IPIP-Big5)

Q: How is the International Personality Item Pool – Five Factor Model – 50 (IPIP-Big5) scored?

Scores range from 10 to 50. Interpretation levels: Low (10-22), Average (23-37), High (38-50).

Q: Is the International Personality Item Pool – Five Factor Model – 50 (IPIP-Big5) free?

Yes, this assessment is completely free. You will receive your results immediately after completion, with an optional AI-powered personalized interpretation.

Mohammed looti

Scale Development & Technical Details

Scale Overview

The International Personality Item Pool – Five Factor Model – 50 (IPIP-Big5) was developed by Lewis R. Goldberg (1999). It is designed to measure Big Five Personality Traits. The scale is intended for use with Adults (ages 16 to 81).

Scale Structure

This instrument consists of 49 items organized into 5 factors/subscales: Openness, Emotional Stability, Agreeableness, Extraversion, Conscientiousness.

Factor / Subscale	Items	N
Openness	1,5,6,7,15,19,22,28,30,32,41	11
Emotional Stability	2,3,12,16,25,29,35,39,42,48	10
Agreeableness	4,13,14,20,24,31,37,43,44,47	10
Extraversion	8,9,17,21,23,34,38,46,49	9
Conscientiousness	10,11,18,26,27,33,36,40,45	9

Response Format

Respondents rate each item using a 5-point Likert scale (1 = Strongly Disagree to 5 = Strongly Agree).

The scale includes 25 reverse-scored items to reduce acquiescence bias.

Scoring

Items are scored by subscale, with each subscale sum representing a distinct dimension.

Total scores range from 10 to 50. Interpretation guidelines:

Low: 10 – 22
Average: 23 – 37
High: 38 – 50

Psychometric Properties

Internal Consistency: The scale has demonstrated good to excellent internal consistency with reported Cronbach’s alpha values of 0.85 – 0.92.

Administration

The scale is self-administered and typically takes approximately 10 minutes to complete. It can be administered individually or in group settings. No special training is required for administration.