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Differential Diagnostic Questionnaire3

Differential Diagnostic Questionnaire Test

See which career fields feel like the best fit and what truly motivates you in about 4 minutes. Get clear, practical direction for career planning and counseling with a quick, reliable snapshot.

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Questions: 204 minutes

08:30

October 2, 2025

October 2, 2025
Material has been updated

October 2, 2025
Material has been published

14,889 views

1,825 completions

1,546 likes

Verified by Daniel Hall

Psychologist with 25 years of experience

Scale Explorer

How the Scales are Structured

example score

6/8

Artistic Image (A) (AI)

Assesses interest and preference for creative and artistic professional activities and environments.

Low interest

Moderate interest

High interest

0 – 3: Low interest | 4 – 6: Moderate interest | 7 – 8: High interest

A score of 6 indicates a moderate interest in artistic and creative fields, suggesting these activities are appealing but not the dominant preference.

example score

6/8

Sign System (Z) (SS)

Measures interest in professions involving work with digital, letter, and other symbolic systems.

Low interest

Moderate interest

High interest

0 – 3: Low interest | 4 – 6: Moderate interest | 7 – 8: High interest

A score of 6 indicates a moderate interest in working with symbolic systems such as data, numbers, codes, or documentation.

example score

3/8

People (P)

Measures interest and inclination toward professions centered on interacting with and helping people.

Low

Moderate

High

0 – 2: Low | 3 – 6: Moderate | 7 – 8: High

A score of 3 suggests a moderate interest in people-oriented work, indicating openness to roles involving communication and service without a strong preference for them.

example score

5/8

Technical (T) (T)

Assesses interest and orientation toward technical professions and activities (e.g., engineering, mechanics, electrical work, driving).

Low

Moderate

High

0 – 2: Low | 3 – 6: Moderate | 7 – 8: High

A score of 5 indicates a moderate interest in technical fields, suggesting some openness to technical work without a strongly pronounced preference.

example score

2/8

Nature (P) (N)

Measures interest in professions involving work with natural objects and environments (e.g., agriculture, animal care, forestry).

Low interest

Some interest

Strong interest

0 – 2: Low interest | 3 – 6: Some interest | 7 – 8: Strong interest

A score of 2 indicates low interest in nature-related professions and a limited inclination to work with plants, animals, or natural environments.

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DATA-BASED USER COHORTS

Who Usually Takes This Test?

High school career choosers

46%OF USERS

Students in grades 8–11 take it to quickly see which professional areas match their interests before choosing subjects or a post-school path.

College and university students

32%OF USERS

Students use it to check whether their major fits them and to decide on specialization, electives, or internship direction.

Counselors and educators

22%OF USERS

School psychologists, career counselors, and teachers use it to support guidance sessions and discuss objective interest-based recommendations.

BASED ON AGGREGATED, ANONYMIZED DATA FROM TENS OF THOUSANDS OF FREUDLY USERS.

Benchmarking

See How You Compare

Once you complete the test, your results are compared with real-world data from people in your country.
Below is a preview of how scores are typically distributed across each scale.

Artistic image (AI) (Ai()

Average

4.4

Normal range

3.5 — 5.4

min.

max.

This curve shows how scores are typically distributed.
Once you complete the test, your result will appear on the scale so you can see how you compare.

Sign. system (S) (Ss()

Average

Normal range

1.6 — 4.4

min.

max.

This curve shows how scores are typically distributed.
Once you complete the test, your result will appear on the scale so you can see how you compare.

Person (P) (P()

Average

4.8

Normal range

3.4 — 6.1

min.

max.

This curve shows how scores are typically distributed.
Once you complete the test, your result will appear on the scale so you can see how you compare.

Technique (T) (T()

Average

5.6

Normal range

4.4 — 6.7

min.

max.

This curve shows how scores are typically distributed.
Once you complete the test, your result will appear on the scale so you can see how you compare.

Nature (N) (N()

Average

5.4

Normal range

4 — 6.8

min.

max.

This curve shows how scores are typically distributed.
Once you complete the test, your result will appear on the scale so you can see how you compare.

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SAMPLE QUESTIONS

Example Questions From the Test

- Help people who are ill and treat them
- Create tables, diagrams, and computer programs
- a) Repair things (clothing, equipment), or your home
- b) Find and correct errors in texts, tables, and figures
- a) Treat animals
- b) Do computations and calculations

These are 3 of the 20 real questions — the rest appear in the test. No sign-up needed to start.

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WHAT THE TEST MEASURES

About This Assessment

Differential Diagnostic Questionnaire, DDQ Test

Differential Diagnostic Questionnaire Test - Symptoms and Signs

career guidance

This measure is intended to support structured screening of differential diagnostic considerations. The Differential Diagnostic Questionnaire is a brief self-report tool used to organize symptom information that may be relevant to clinical formulation and diagnostic decision-making.

The questionnaire includes 20 items and typically takes about 4 minutes to complete. It may be used in clinical or research contexts to facilitate systematic review of reported concerns, support documentation, and guide follow-up assessment. The Differential Diagnostic Questionnaire is attributed to Robert L. Spitzer and Jean Endicott.

Author: Jean Endicott, Robert L. Spitzer

Literature: Holland, J. L. Making vocational choices: A theory of vocational personalities and work environments. Psychological Assessment Resources. 1997.; Brown, S. D., & Lent, R. W. Career development and counseling: Putting theory and research to work. John Wiley & Sons. 2005.