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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08:30
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How the Scales are Structured
DATA-BASED USER COHORTS
Who Usually Takes This Test?
BASED ON AGGREGATED, ANONYMIZED DATA FROM TENS OF THOUSANDS OF FREUDLY USERS.
RESULTS YOU CAN ACTUALLY USE
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.
Below is a preview of how scores are typically distributed across each scale.
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 on the scale so you can see how you compare.
Once you complete the test, your result will appear on the scale so you can see how you compare.
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 on the scale so you can see how you compare.
Once you complete the test, your result will appear on the scale so you can see how you compare.
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 on the scale so you can see how you compare.
Once you complete the test, your result will appear on the scale so you can see how you compare.
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 on the scale so you can see how you compare.
Once you complete the test, your result will appear on the scale so you can see how you compare.
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 on the scale so you can see how you compare.
Once you complete the test, your result will appear on the scale so you can see how you compare.
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CLEAR ANSWERS TO COMMON QUESTIONS
Frequently Asked Questions
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
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Differential Diagnostic Questionnaire Test - Symptoms and Signs
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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