Big Five Inventory – BFI

Mohammed looti

Scale Development & Technical Details

Scale Overview

The Big Five Inventory – BFI was developed by Oliver P. John & Sanjay Srivastava (1999). It is designed to measure Big Five Personality Traits. The scale is intended for use with Adults.

Scale Structure

This instrument consists of 44 items organized into 5 factors/subscales: Extraversion, Agreeableness, Conscientiousness, Neuroticism, Openness.

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

Response Format

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

The scale includes 16 reverse-scored items to reduce acquiescence bias.

Scoring

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

Administration

The scale is self-administered and typically takes approximately 5 minutes to complete. It can be administered individually or in group settings. No special training is required for administration.