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Differential Diagnostic Questionnaire Test

Take the online Differential Diagnostic Questionnaire Test - AI psychologist FreudlyYou can take Differential Diagnostic Questionnaire Test here. Online version of a simple and accurate psychological test with interpretation.en
Taking about five minutes, the 30-question Differential Diagnostic Questionnaire Test helps you compare your interests across artistic, analytical, technical, nature-focused, and people-oriented work. Its profile highlights preferred vocational directions, supporting reflection when exploring careers, studies, or possible workplace roles.
Questions: 305 minutes
Differential Diagnostic Questionnaire Test: test ticket with numbers
October 2, 2025October 2, 2025Material has been updatedOctober 2, 2025Material has been published
34,651 view
3,102 completions
2,586 likes
Daniel HallPsychologist · Test reviewer
2,586 likes
Scale Explorer

How the Scales are Structured

Artistic Imagery (H)AI
Measures interest and inclination toward activities involving creating artistic images and engaging in creative arts.
example score7/12
7/12Moderateexample score
0 – 5Low
6 – 8Moderate
9 – 12High
A score of 7 falls in the Moderate range, suggesting a noticeable but not dominant interest in creative, art-related activities and professions.
Sign System (Z)SS
Measures preference for working with sign systems such as numbers, texts, documents, and information systems in analytical, structured tasks.
example score5/12
5/12Lowexample score
0 – 5Low
6 – 9Moderate
10 – 12High
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).
Technical Interests (T)TI
Measures interest and inclination toward technical work involving machinery, devices, and equipment maintenance.
example score6/12
6/12Moderateexample score
0 – 5Low
6 – 8Moderate
9 – 12High
A score of 6 falls in the Moderate range, suggesting a noticeable but not dominant interest in technical professions and working with equipment.
Nature (N)N
Measures interest in professions involving living nature, such as working with plants and animals.
example score5/12
5/12Moderate interestexample score
0 – 3Low interest
4 – 8Moderate interest
9 – 12High interest
A score of 5 indicates a moderate interest in nature-related activities and roles involving plants or animals.
PeopleP
Measures inclination toward people-focused work that involves active social interaction and helping, teaching, guiding, or coordinating others.
example score6/12
6/12Moderate people-focusexample score
0 – 5Lower people-focus
6 – 8Moderate people-focus
9 – 12Higher 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.
just completed the test
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.
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.
Shaded area — where most people score
Dot — the average
You — your score lands on each curve after the test— your score, after the test
Artistic image (AI)
You?
Average7.8
Typical rangeTypical6.3 – 9.3
Possible0 – 12
Sign. system (S)
You?
Average8.2
Typical rangeTypical6.4 – 10.1
Possible0 – 12
Technique (T)
You?
Average4.9
Typical rangeTypical3 – 6.8
Possible0 – 12
Nature (N)
You?
Average4.6
Typical rangeTypical3 – 6.1
Possible0 – 12
Person (P)
You?
Average4.4
Typical rangeTypical2.7 – 6.1
Possible0 – 12
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SAMPLE QUESTIONS

Example Questions From the Test

Assume that, after appropriate training, you would be able to perform any job equally well. This questionnaire presents a list of different types of work. If you had to choose only one job from each pair in this list, which would you prefer? Select one type of work from each pair.
    • Driving a car, bus, airplane, ship, or other vehicle
    • Editing photographs using computer software
    • Test computers before they are sold
    • Process, analyze, and summarize sociological data
    • Breed and train service dogs to detect drugs
    • Assemble computers or equipment and set them up for use
These are 3 of the 30 real questions — the rest appear in the test. No sign-up needed to start.
WHAT THE TEST MEASURES

Differential Diagnostic Questionnaire Test - Description and methodology of the test

career guidance

For students, adults considering a career change, and anyone comparing possible work environments, the Differential Diagnostic Questionnaire Test turns paired vocational preferences into a profile of occupational interests. It helps readers notice which tasks attract them, where several directions overlap, and what to explore in education, training, or employment. As a career interest test, it helps readers compare educational, training, and workplace options with the activities they prefer.

What This Assessment Explores

The questionnaire compares preferences for artistic, analytical, technical, nature-focused, and people-oriented work. Concrete activities make the result about appealing work situations rather than a single job title. The five profile dimensions are:

  • Artistic Imagery (H), 0–12, measures interest in creating artistic images: Low 0–5; Moderate 6–8; High 9–12.
  • Sign System (Z), 0–12, measures preference for texts, numbers, documents, and information systems: Low 0–5; Moderate 6–9; High 10–12.
  • Technical Interests (T), 0–12, measures preference for machinery and equipment: Low 0–5; Moderate 6–8; High 9–12.
  • Nature (N), 0–12, measures interest in work with plants and animals: Low interest 0–3; Moderate interest 4–8; High interest 9–12.
  • People, 0–12, measures preference for active interpersonal work: Lower people-focus 0–5; Moderate people-focus 6–8; Higher people-focus 9–12.

In this vocational interest profile, the pattern shows relative directions to investigate; a mixed result can point toward several fields.

Methodology and Scientific Basis

Each item presents two activities; the respondent chooses the more appealing option. Creative, analytical, technical, nature-related, and interpersonal pairs reveal preferences through concrete choices rather than abstract traits.

Results appear on five displayed scales, with higher or lower scores corresponding to each dimension’s bands. These bands describe levels within dimensions, not universal thresholds for aptitude, admission, or employment.

The evidence base is Klimov’s occupational-interest classification and Gretsov and Azbel’s career-choice framework. Attributed to Robert L. Spitzer, this questionnaire is conceptually consistent with that tradition, not identified as a test created by Klimov, Gretsov, or Azbel. Klimov’s self-determination work and Bagova and colleagues’ study support viewing occupational preference as part of broader career choice.

Interpretation is stronger when the career choice questionnaire is considered alongside abilities, values, experience, and work exposure. For this online version, standardization, population norms, and reliability are not reported; mood, self-awareness, and socially desirable answers may influence choices. The result is a starting point for reflection, not a standalone career verdict.

Author: Robert L. Spitzer
Literature:
  • Gretsov, Andrey G., and Anastasia A. Azbel. Psychological Tests for High School Students and College Students. Saint Petersburg: Piter, 2012. ISBN 978-5-459-01074-9.
  • Klimov, Yevgeny A. How to Choose a Profession. 2nd ed., revised and expanded. Moscow: Prosveshchenie, 1990. ISBN 5-09-002654-8.
  • Bagova, Rimma, Lelya Baysieva, Olga Mikhaylenko, and Maryam Nogerova. “Features of Professional Self-Determination of Modern Schoolchildren in the Kabardino-Balkarian Republic.” In Social and Cultural Transformations in the Context of Modern Globalism, vol. 58, 150–156. Future Academy, 2019. 10.15405/epsbs.2019.03.02.18
  • Klimov, Yevgeny A. Psychology of Professional Self-Determination. Moscow: Akademiya, 2004. ISBN 5-7695-1506-6.

Updated:

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