Psychology > Adult Mental Health > Adult Mental Health > Brief Symptom Inventory (BSI)

Brief Symptom Inventory (BSI)

Key information

Quickly measure psychological symptoms


Leonard R Derogatis

Publication Year:


Age Range:

13 years and older


Individual - 8 to 10 minutes

Qualification Code:


Read the full product description

The efficient Brief Symptom Inventory (BSI) instrument provides patient-reported data to help support clinical decision-making at intake and during the course of treatment in multiple settings.

Guidance on using BSI in your Telepractice

Digital scoring and reporting option available on Q-global®

We also distribute the BSI® 18 test.


How to Use This Test

Psychologists, psychiatrists, physicians, nurses, and other healthcare professionals can use the BSI instrument to help:

  • Assess patients at intake for psychological problems
  • Objectively support care management decisions
  • Measure patient progress during and after treatment to monitor change
  • Provide coutcomes measurement for treatment programs and providers through aggregated patient information

Key Features

  • The BSI test is brief and requires only 8-10 minutes to complete, making it well-suited for repeated administrations over time to evaluate patient progress.
  • The BSI instrument provides an overview of a patient's symptoms and their intensity at a specific point in time.
  • The Global Severity Index (GSI) is designed to help quantify a patient's severity-of-illness and provides a single composite score for measuring the outcome of a treatment program based on reducing symptom severity.
  • The reliability, validity, and utility of the BSI instrument have been tested in more than 400 research studies.


Symptom Scales
SOM - Somatization
O-C - Obsessive-Compulsive
I-S - Interpersonal Sensitivity
DEP - Depression
ANX - Anxiety
HOS - Hostility
PHOB - Phobic Anxiety
PAR - Paranoid Ideation
PSY - Psychoticism

Global Indices
GSI - Global Severity Index, Helps measure overall psychological distress level
PSDI - Positive Symptom Distress Index, Helps measure the intensity of symptoms
PST - Positive Symptom Total, Reports number of self-reported symptoms

Psychometric Information

Adult Nonpatient
The adult nonpatient norms are based on 974 individuals—494 males and 480 females. Approximately 85% of the sample was white and 60% was married. The mean age was 46.

Adult Psychiatric Outpatient
The adult psychiatric outpatient norms are based on 1,002 individuals—425 males and 577 females. Approximately 67% of the sample was white and 46% was single. The mean age was 31.2.

Adult Psychiatric Inpatient
The adult psychiatric inpatient norms are based on 423 individuals—158 males and 265 females. Approximately 56% of the sample was white and 44% was single. The mean age was 33.1.

Adolescent Nonpatient
The adolescent norms are based on 2,408 individuals—1,601males and 807 females. The data were gathered in six separate schools in two states. Approximately 58% of the sample was white, and the mean age was 15.8.


Q-global® - Our web-based system for scoring and reporting paper administrations

Q-global logo

Q-global® is our secure and affordable web-based platform for test administration, scoring and reporting. It houses the industry's gold standard in assessment tools and is accessible from any computer connected to the Internet. Q-global helps you quickly and efficiently organise examinee information, generate scores, and produce accurate comprehensive reports.

Pay-per-use reporting

Customers wishing to administer and score this assessment onscreen, can now pay per-report, giving you the flexibility to pay as the assessment is used.

Learn more about -Q-global


Price list

Manual Administration Kits

BSI Hand-Scoring Starter Kit - Inpatient Psychiatric

Includes manual, 50 answer sheets with test items, 50 profile forms and 2 worksheets
ISBN: 9780749154424
£169.79 inc VAT

BSI Hand-Scoring Starter Kit - Nonpatient Adolescent

Includes manual, 50 answer sheets with test items, 50 profile forms and 2 worksheets
ISBN: 9780749154400
£169.79 inc VAT

BSI Hand-Scoring Starter Kit - Nonpatient Adult

Includes manual, 50 answer sheets with test items, 50 profile forms and 2 worksheets
ISBN: 9780749154394
£169.79 inc VAT


BSI Manual

BSI Manual - Print
ISBN: 9780749154356
£50.49 inc VAT


BSI Profile Forms - Nonpatient Adolescent

Includes 50 profile forms and 2 worksheets.
ISBN: 9780749154455
£41.99 inc VAT
Handscore answer sheets, pack of 50
ISBN: 9780749154431
£92.39 inc VAT

BSI Profile Forms - Outpatient Psychiatric

Includes 50 profile forms and 2 worksheets.
ISBN: 9780749154462
£41.99 inc VAT

Scoring and Reporting Software


ISBN: 9780749154370
£80.40 inc VAT
Currently out of stock, available to pre-order

Q-global® Web-based Administration, Scoring and Reporting

BSI Q-global Digital Manual

Once ordered, the digital manual is accessible by logging into Q-global and visiting the Q-global Resource Library. It is a view-only digital file.
ISBN: 9780749115746
£34.99 inc VAT

BSI Q-global Interpretive Report

Q-global BSI Interpretive Report
ISBN: 9780749166083
£17.04 inc VAT

BSI Q-global Profile Report

ISBN: 9780749166090
£7.26 inc VAT

Change the quantities of your desired products, then click "Add to basket". If your required component is not listed, please contact Customer Services on: or 0345 630 88 88.

What do you think?