Behavior Data Systems
Assessment Tests and Interviews Reliable Computer Graded Assessment


Offender Assessment Index (OAI)
The Offender Assessment Index (OAI) is designed for use in drug courts, family courts, municipal courts and county courts. It can be used to evaluate misdemeanor or felony charged defendants. OAI reports are particularly useful at pre-sentence hearings.

The OAI consists of 158 items and takes 35 minutes to complete. OAI's are scored on-site and reports printed in 3 minutes. The OAI contains 7 measures (scales): Truthfulness Scale, Resistance Scale, Violence Scale, Stress Coping Abilities Scale, Substance Abuse/Dependency Scale, Alcohol Scale and the Drug's Scale.


Truthfulness Scale: measures the truthfulness of the defendant while completing the OAI. This Truthfulness Scale identifies faking.

Resistance Scale: measures client defensiveness, non-compliance and oppositional behaviors. This scale varies directly with the client's attitude, feelings and outlook.

Violence Scale: measures a person's tendency to injure, damage or destroy. Characterized by cruelty, use of excessive force, coercion and brutality. The Violence Scale identifies dangerous people.

Stress Coping Abilities Scale: measures a person's ability to cope effectively with stress. Stress exacerbates emotional problems.

Substance Abuse/Dependency Scale: utilizes DSM-IV criteria to classify substance (alcohol or drugs) dependency and substance abuse. This is a classification (not a measurement) scale.

Alcohol Scale: measures the severity of alcohol use and related problems. Alcohol refers to beer, wine and other liquor.

Drug's Scale: measures the severity of illicit drug (marijuana, crack, cocaine, amphetamines, barbiturates and heroin) use and related problems.

Unique Features

Truthfulness (Validity) Scale: Measures how truthful and open the client was while completing the Offender Assessment Index. This scale identifies denial, problem minimization and faking. Many troubled individuals attempt to minimize their problems. A Truthfulness Scale is a necessary component in contemporary assessment. The Offender Assessment Index Truthfulness Scale has been validated with other tests, truthfulness studies and the Minnesota Multiphasic Personality Inventory (MMPI) L and F-Scales. It consists of a number of items that most clients agree or disagree with. This important scale has been demonstrated to be reliable, valid and accurate.

Truth-Corrected Scores: Have proven to be very important in enhancing assessment accuracy. This proprietary truth correction program is comparable to the MMPI K-Scale correction methodology. The Offender Assessment Index Truthfulness Scale has been correlated with the other OAI scales. The Truth Correction equation then converts raw scores to Truth-Corrected scores. Truth-Corrected scores are more accurate than raw scores. Raw scores reflect what the client wants you to know. Truth-Corrected scores reveal what the client is trying to hide.

More than Just Another Alcohol or Drug Test. In addition to alcohol and drugs, the Offender Assessment Index assesses other important areas of inquiry like truthfulness, violence (lethality), distress, adjustment and stress coping abilities. The Offender Assessment Index is designed specifically for male and female assessment. It provides the information needed for understanding attitudes and behavior.

Reading Impaired Assessment: Reading impaired clients represent 20+ percent of clients tested. This represents a serious problem to many other tests. In contrast, Behavior Data Systems has developed a proprietary alternative for reading impaired assessment, which is termed "human voice audio."

Human Voice Audio: (in English or Spanish) helps resolve many reading, along with cultural difference, issues. Passive vocabularies are often greater than active vocabularies. Hearing items read often helps reduce both cultural and communication problems. As discussed earlier, "human voice audio" test presentation requires a computer, headphones and simple instructions regarding how to operate the up-down arrow keys located on the computer keyboard. Without this "human voice" option, a screening program could be limited.

Confidentiality: Behavior Data Systems encourages test users to delete names from diskettes before they are returned to Behavior Data Systems. This proprietary name deletion procedure involves a few keystrokes. Once names are deleted, they are gone and cannot be retrieved. Deleting names does not delete demographics or test data, which is downloaded into the Offender Assessment Index database for subsequent analysis. This procedure insures confidentiality and compliance with HIPAA (federal regulation 45 C.F.R. 164.501).

Inventory of Scientific Findings: Much of the Offender Assessment Index research has been gathered together in one document titled "OAI: An Inventory of Scientific Findings." This document summarizes OAI research chronologically -- as the studies were completed.

This rather innovative chronological reporting format was established largely because of the OAI database, which permits annual database analysis of all tests administered. It also allows the reader to observe the evolution of the Offender Assessment Index into a state-of-the-art assessment test.

Free Examination Kit: A 1-test demonstration diskette is available on a 30-day cost free basis. Demo diskettes are in Windows format. The Examination Kit includes a 1-test demo diskette, installation CD (with instructions), test booklet, answer sheet and some descriptive materials. Behavior Data Systems, Ltd. does want the test booklet and diskette returned within 30 days.

Test Unit Fee (Cost): There is only the one cost or charge, and that is the test unit fee. Everything else is included in the test unit fee. The test unit fee encompasses test booklets, answer sheets, training manuals, upgrades, ongoing database research, annual test program summaries, staff training and support services. Do not be misled by some test publishers' à la carte pricing, which can entail separate costs for test administration, manuals, upgrades, research, support services, etc. Behavior Data Systems' test unit fee is very affordable. Click on the Cost link to review the Offender Assessment Index (OAI) test unit fee.

The Offender Assessment Index (OAI) scales measure important offender attitudinal (resistance), problems (alcohol and drugs) and behavioral (violence) areas of inquiry. The OAI simultaneously classifies substance abuse with DSM-IV criteria while measuring alcohol and drug abuse severity. The Offender Assessment Index (OAI) is an adult defendant test that is appropriate for misdemeanor and felony cases.
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The Offender Assessment Index (OAI) was designed in conjunction with experienced court staff. Behavior Data Systems doctorate level psychologists and psychometrists also incorporated municipal court and county court staff input into the OAI design.

1. Why include a Truthfulness Scale? It would be naive to assume that defendants always tell the truth -- particularly in court-related settings. Literature on defendant evaluations consistently demonstrate that defendant's tend to minimize their problems and concerns. And many defendants attempt to "fake good." The Truthfulness Scale detects denial and faking.

2. Why include the Substance Abuse/Dependency Scale? Classification as to substance dependency, substance abuse, or non-pathological substance use is related to levels of intervention and treatment. The Diagnostic and Statistical Manual (DSM-IV) is the most widely accepted substance-related classification procedure. That is why the Alcohol Scale and Drug Scale utilize DSM-IV criteria for defendant substance-use classification. Inclusion of the Substance Abuse/Dependency Scale greatly enhances OAI substance use/abuse assessment classification, while providing a sound rationale for intervention and treatment.

3. Why include measures other than alcohol or drugs? Most experienced court or probation staff want more than just alcohol and drug information. They want to know if the defendant was telling the truth. And it is helpful to assess antisocial tendencies as well as violence (lethality) potential. It also helps to screen mental health problems in a non-introversive manner. The OAI is much more than just an alcohol or drug test. It offers comprehensive, yet efficient defendant screening. The OAI provides information helpful to case adjudication and subsequent intervention/treatment.

4. Why is a built-in database important? Behavior Data Systems proprietary database technology allows ongoing research and testing program summaries that were not possible before. Ongoing database research enhances accurate assessment and quality control. And annual summary reports provide for program self-evaluation. Ongoing research and annual testing program summary reports are provided at no additional cost.

5. What's unique about the Offender Assessment Index? The OAI was designed specifically for offender use. Multiple scales provide a comprehensive understanding of defendants -- evaluating attitudes and behaviors missed by other tests. The OAI is state-of-the-art and incorporates many desirable features like incorporating DSM-IV criteria with ASAM compatible recommendations. Other unique features include "test data input verification," delete client names (confidentiality), easy to read reports, reliable and valid results, accurate assessment, ongoing database research, and free annual summary reports.

6. What do you want to know about defendants before adjudication or sentencing? The questions are many and include the following: Was the defendant truthful? Does the defendant have a substance (alcohol or other drug) abuse problem? Is the defendant potentially dangerous, violent or lethal? Does the defendant have a resistant attitude? Where does the defendant fit in the DSM-IV classification of substance dependency or abuse? Is it likely that the defendant has identifiable emotional or mental health problems? The Offender Assessment Index answers these questions and more.

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Additional information can be provided upon request by writing:
Behavior Data Systems, Ltd.
P.O. Box 44256
Phoenix, Arizona 85064-4256

Our telephone number is (602) 234-3506.
Our fax number is (602) 266-8227.
and our e-mail address is

Behavior Data Systems, Ltd. Copyright © 2007