Brief Negative Symptom Scale (BNSS) Test
Assess negative symptom severity and daily impact in schizophrenia in about 3 minutes. With 13 items, it delivers a clear, reliable snapshot to guide care and track change fast.
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08:30
Scale Explorer
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.
Expressive Deficit (ED)
Average
11.2
Normal range
6.7 — 15.7
min.
0
max.
30
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.
Apato-abulic domain (Ad)
Average
30.1
Normal range
22.7 — 37.4
min.
0
max.
42
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.
Alogia (A)
Average
4.7
Normal range
3.2 — 6.3
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.
Blunted Affect (BA)
Average
6
Normal range
3.3 — 8.6
min.
0
max.
18
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.
Volitional Disorders (VD)
Average
3.8
Normal range
1.7 — 5.8
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.
Social Withdrawal (SW)
Average
7.6
Normal range
6 — 9.2
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.
Experiencing distress (Ed)
Average
2.4
Normal range
1.5 — 3.4
min.
0
max.
6
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.
Anhedonia (A)
Average
7.8
Normal range
5.5 — 10
min.
0
max.
18
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.
Total Score (TS)
Average
45.1
Normal range
33.4 — 56.7
min.
0
max.
78
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 scale measure?
It rates the severity of negative symptoms associated with schizophrenia. It focuses on reduced motivation, diminished emotional expression, and reduced social engagement.
How long does it take to complete?
Administration typically takes about 3 minutes. Timing may vary slightly based on response length.
How many questions are included?
The scale includes 13 scored items. Each item targets a specific aspect of negative symptoms.
Who should administer this scale?
It is intended for use by trained clinicians or qualified research staff. Consistent administration improves comparability over time.
How should responses be given?
Responses are based on brief, direct questions about recent experiences and daily functioning. If an item is unclear, the administrator may restate it using neutral wording.
WHAT THE TEST MEASURES
About This Assessment
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Brief Negative Symptom Scale (BNSS) Test - Symptoms and Signs
This measure is used to quantify the severity of negative symptoms commonly observed in schizophrenia spectrum conditions. The Brief Negative Symptom Scale (BNSS) provides a structured approach to rating symptom intensity and related functional impact.
It consists of 13 items and is typically completed in about 3 minutes. Ratings are based on standardized prompts and clinical judgment to support symptom monitoring over time in both clinical and research contexts (Kirkpatrick; Fenton).
The Brief Negative Symptom Scale (BNSS) is intended to support efficient documentation of core negative symptom domains and to facilitate comparison across visits or study time points.
Author: Brian Kirkpatrick, William S. Fenton
Literature: Andreasen, N. C. Scale for the assessment of negative symptoms (SANS). University of Iowa. 1983.; Kirkpatrick, B., Strauss, G. P., Nguyen, L., Fischer, B. A., Daniel, D. G., Cienfuegos, A., & Marder, S. R. The brief negative symptom scale: psychometric properties. Schizophrenia Bulletin. 2011.
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