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Differential Diagnostic Questionnaire Test

Understand which work areas fit your interests and strengths in about 5 minutes. Get a clear profile to guide career talks and next steps, based on 30 quick items.
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Questions: 305 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
27086 views
2364 completions
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Scale Explorer
How the Scales are Structured
example score
7/12
Artistic Imagery (H) (AI()
Measures interest and inclination toward activities involving creating artistic images and engaging in creative arts.
Low
Moderate
High
0 – 5: Low | 6 – 8: Moderate | 9 – 12: High
A score of 7 falls in the Moderate range, suggesting a noticeable but not dominant interest in creative, art-related activities and professions.
example score
5/12
Sign System (Z) (SS()
Measures preference for working with sign systems such as numbers, texts, documents, and information systems in analytical, structured tasks.
Low
Moderate
High
0 – 5: Low | 6 – 9: Moderate | 10 – 12: High
A score of 5 falls in the Low range, suggesting a limited or situational interest in professions centered on structured information (e.g., numbers, texts, documents, systems).
example score
6/12
Technical Interests (T) (TI()
Measures interest and inclination toward technical work involving machinery, devices, and equipment maintenance.
Low
Moderate
High
0 – 5: Low | 6 – 8: Moderate | 9 – 12: High
A score of 6 falls in the Moderate range, suggesting a noticeable but not dominant interest in technical professions and working with equipment.
example score
5/12
Nature (N) (N()
Measures interest in professions involving living nature, such as working with plants and animals.
Low interest
Moderate interest
High interest
0 – 3: Low interest | 4 – 8: Moderate interest | 9 – 12: High interest
A score of 5 indicates a moderate interest in nature-related activities and roles involving plants or animals.
example score
6/12
People (P)
Measures inclination toward people-focused work that involves active social interaction and helping, teaching, guiding, or coordinating others.
Lower people-focus
Moderate people-focus
Higher people-focus
0 – 5: Lower people-focus | 6 – 8: Moderate people-focus | 9 – 12: Higher people-focus
A score of 6 indicates a moderate interest in working with people, suggesting comfort with social interaction in some roles while also valuing other activity areas.
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DATA-BASED USER COHORTS
Who Usually Takes This Test?
Teenagers choosing a path
46%OF USERS
Students who want a quick, clear idea of which professional areas match their interests before choosing courses or a future career.
Parents guiding decisions
31%OF USERS
Parents who want structured clues about their child’s strengths and preferences to support a realistic career conversation.
School counselors and teachers
23%OF USERS
Educators and career counselors who use a short questionnaire to start counseling sessions and plan next steps for students.
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.
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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
7.8
Normal range
6.3 — 9.3
min.
0
max.
12
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
8.2
Normal range
6.4 — 10.1
min.
0
max.
12
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
4.9
Normal range
3 — 6.8
min.
0
max.
12
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
4.6
Normal range
3 — 6.1
min.
0
max.
12
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
4.4
Normal range
2.7 — 6.1
min.
0
max.
12
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.
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CLEAR ANSWERS TO COMMON QUESTIONS
Frequently Asked Questions

Any questions left?

What does this questionnaire measure?
It screens for broad areas of professional interest and preferred types of activity. Results summarize relative inclination toward working with people, information, technology, nature, or structured tasks.
Who is this questionnaire intended for?
It is designed for adolescents and older students who are exploring education or career directions. It may also be used as an initial screening tool in counseling settings.
How long does it take to complete?
Typical completion time is about 5 minutes. It includes 30 items.
How should items be answered to ensure valid results?
Select the option that best matches usual preferences rather than a desired image. Answer all items and avoid spending excessive time on any single item.
How should the results be interpreted?
Scores indicate relative strengths across interest domains, not aptitude, intelligence, or guaranteed fit for a specific job. Results are best used to guide further discussion and more detailed assessment when needed.
WHAT THE TEST MEASURES
About This Assessment
Differential Diagnostic Questionnaire, DDQ Test

Differential Diagnostic Questionnaire Test

career guidance

This brief self-report measure is intended to support rapid screening of vocational interests and preferred activity domains. The Differential Diagnostic Questionnaire helps clarify the types of tasks and work environments a respondent is more likely to find engaging or comfortable.

It consists of 30 items and typically takes about 5 minutes to complete. Responses are used to generate a profile of relative interest areas that can inform educational planning and career guidance discussions.

The Differential Diagnostic Questionnaire is best interpreted as an initial indicator rather than a standalone basis for high-stakes decisions. When used clinically or in counseling settings, results are most appropriate when integrated with interview data and other assessment information. (Robert L. Spitzer)

Author: Robert L. Spitzer
Literature: Holland, J. L. Making vocational choices: A theory of vocational personalities and work environments. Psychological Assessment Resources. 1997.; Anastasi, A., & Urbina, S. Psychological testing. Prentice Hall. 1997.
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