Home
Psychological tests
Differential Diagnostic Questionnaire

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.

Start Online Test

Questions: 204 minutes

Hi! My name is Freudly, i am an AI therapist, I will give you an interpretation of the test after you complete it.

08:30

October 2, 2025

October 2, 2025
Material has been updated

October 2, 2025
Material has been published

11675 views

1515 completions

1285 likes

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.

Start Online Test

just completed the test

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.

RESULTS YOU CAN ACTUALLY USE

What You’ll See After You Finish the Test

Scale Results
— Explained Clearly

Your scores across each test scale, translated into plain, usable insights. Not just numbers, but what they actually mean for your daily life, emotional state, and overall well-being.

AI-Powered
Interpretation

A structured, clinically grounded explanation. Our AI analyzes patterns and relationships between scales to provide a coherent interpretation — without alarmist language.

Statistical
Comparison

See how you compare to others. Your scores are placed in a statistical context, showing percentiles and trends based on anonymized platform data to help you understand what`s typical.

Practical
Recommendations

Actionable guidance tailored to your profile. Receive clear, realistic suggestions you can apply immediately — focused on coping, self-regulation, and realistic next steps.

AI-Detected
Insights

Key patterns you might not notice on your own. Surfacing subtle connections in your responses that help you better understand what may be driving your current results.

Discuss with
an AI Psychologist

Clarify, reflect, and explore right away. Talk through your outcomes, ask questions, and explore meanings in a calm, non-diagnostic dialogue environment.

Start Online Test

Used in 52+ countries

Benchmarking

See How You Compare

Once you finish the test, your results will be compared with real-world data from people in your country.
Below is a preview of the benchmarks we use to place your score in context.

Artistic image (AI) (Ai()

Average

4.4

Normal range

3.5 — 5.4

min.

max.

majority

This curve shows how scores are typically distributed.
Once you complete the test, your result will appear here so you can see where you land.

Sign. system (S) (Ss()

Average

Normal range

1.6 — 4.4

min.

max.

majority

This curve shows how scores are typically distributed.
Once you complete the test, your result will appear here so you can see where you land.

Person (P) (P()

Average

4.8

Normal range

3.4 — 6.1

min.

max.

majority

This curve shows how scores are typically distributed.
Once you complete the test, your result will appear here so you can see where you land.

Technique (T) (T()

Average

5.6

Normal range

4.4 — 6.7

min.

max.

majority

This curve shows how scores are typically distributed.
Once you complete the test, your result will appear here so you can see where you land.

Nature (N) (N()

Average

5.4

Normal range

4 — 6.8

min.

max.

majority

This curve shows how scores are typically distributed.
Once you complete the test, your result will appear here so you can see where you land.

Start Online Test

Featured On

Rated 4.8/5 by Our Customers

“Freudly really helped me discover parts of my personality I hadn’t noticed before. It strengthened the areas where I needed to grow and made me feel more grounded and confident in the parts that already worked well.”

— Emma C., US

“I wanted to understand how serious my ADHD is, and now I finally do. I also realized I need to work on my self-esteem. It has been low for a long time, and that makes daily life harder than it should be.”

— Mateo R., CA

“Reading each question felt like someone really understood me. Even though I’ve already dealt with much of this, reflecting still helped me learn something new about myself.”

— Caroline F., US

“The process is simple. The test covers everything you need, and you’ll get a clear breakdown of your results. For just a few dollars, it’s a great value.”

— Klara N., CZ

“I kept thinking there might be a small chance, but now I know for sure. The questions were easy to understand, and the whole process was straightforward.”

— Bruno M., BR

“I really enjoyed this experience. I learned a lot, and it helped me make sense of my thoughts and the feeling I’ve had for a long time that I may have grown up with undiagnosed ADHD.”

— Alice B., FR

“Great platform — the insights were genuinely meaningful!”

— Daniel W., DE

“Everything was easy to follow. The tools you get at the end are genuinely helpful for self-growth, and the price is very reasonable. I really appreciate that.”

— Sofia M., ES

“Surprisingly accurate — honestly didn’t expect it to nail things so well.”

— Adir B., IL

“There are lots of different tests to pick from, and the price is surprisingly low for how much insight you get.”

— Olivia W., CA

“I was pleasantly surprised when I read the results. It was as if someone had sorted out my messy thoughts and given me useful tips to help me speak with more confidence.”

— Grace O., IE

“It was really solid, very detailed, and it actually helped me make sense of a lot of things.”

— Carla T., TT

“I was really impressed with the report. It was clear, thoughtful, and it reflected things I’ve been noticing about myself.”

— Jade H., US

“The questions made me think deeply and helped me become more self-aware.”

— Brooke S., US

“Reading through most of the questions made me feel understood. Although I’ve already worked through some of these issues, the questions still gave me useful insights and helped me learn more about myself.”

— Ryan M., US

“I usually take one or two tests each month, and this has become a good way for me to see how I’m doing.”

— Lucas W., US

“Most of the time, my results are in the 90 to 98th percentile compared to others. It really makes me feel like there’s something unique about me.”

— Ethan C., US

“I tried out some of the AI’s suggestions, and to be honest, they worked much better than I thought they would. Maybe this thing really is smarter than me.”

— Reece D., AU

Trusted by 22k+ Users Worldwide

CLEAR ANSWERS TO COMMON QUESTIONS

Frequently Asked Questions

Any questions left?

What does this questionnaire measure?

It screens for vocational interests and typical work preferences across broad occupational domains. Results indicate which types of activities and environments are most engaging.

Who is this questionnaire intended for?

It is designed for adolescents and young adults who are considering education or career options. It can also be used in guidance settings to support structured discussion of preferences.

How long does it take and how many items are included?

Estimated completion time is about 4 minutes. The questionnaire includes 20 items.

How should responses be selected?

For each item, choose the option that best matches typical preference rather than current mood or perceived expectations. If both options seem acceptable, select the one that is more consistently preferred.

How should results be interpreted?

Scores reflect relative preference patterns rather than ability, achievement, or suitability for a specific job. Results are intended to guide exploration and should be combined with additional information when making decisions.

WHAT THE TEST MEASURES

About This Assessment

Differential Diagnostic Questionnaire, DDQ Test

Differential Diagnostic Questionnaire Test

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.

Test Question Form