Open Four Temperaments Scales (O4TS)

Q: How many questions does the Open Four Temperaments Scales (O4TS) have?

The Open Four Temperaments Scales (O4TS) contains 48 items and takes approximately 12 minutes to complete.

Q: How is the Open Four Temperaments Scales (O4TS) scored?

Scores range from 12 to 60. Interpretation levels: Low Expression (12-27), Moderate Expression (28-44), High Expression (45-60).

Q: Is the Open Four Temperaments Scales (O4TS) 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 Open Four Temperaments Scales (O4TS) was developed by Eric Jorgenson (2014). It is designed to measure Four Temperaments. The scale is intended for use with Adults.

Scale Structure

This instrument consists of 48 items organized into 4 factors/subscales: Sanguine, Choleric, Melancholic, Phlegmatic.

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

Response Format

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

The scale includes 3 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 12 to 60. Interpretation guidelines:

Low Expression: 12 – 27
Moderate Expression: 28 – 44
High Expression: 45 – 60

Psychometric Properties

Internal Consistency: The scale has demonstrated good to excellent internal consistency with reported Cronbach’s alpha values of Not specified.

Administration

The scale is self-administered and typically takes approximately 8 minutes to complete. It can be administered individually or in group settings. No special training is required for administration.